Changeset 255

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Timestamp:
02/17/2007 03:31:28 AM (6 years ago)
Author:
GooDiffMonitor
Message:

Modified files:

  • /google/picasa.google.com/support/bin/answer.py?answer=15188&topic=1144
  • /google/books.google.com/webmasters/faq.html

GooDiffMonitor run finished @ 2007-02-17 03:31:26.124327

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  • google/books.google.com/webmasters/faq.html

    r254 r255  
    1 ** G  o  o  g  l  e     **   
    2 ** Error ** 
     1[ ](/) 
     2**  Google Information for Webmasters ** 
     3 
     4[ Home ](/)    
     5   
     6[ About Google ](/about.html)    
     7   
     8** Webmaster Info **    
     9   [ ** FAQ ** ](index.html)    
     10   [ Guidelines ](guidelines.html)    
     11   [ Facts & Fiction ](facts.html)    
     12   [ SEOs ](seo.html)    
     13   [ Googlebot ](bot.html)    
     14   [ Feedfetcher ](../feedfetcher.html)    
     15   [ Removals ](remove.html)    
     16 
     17 
     18_ Find on this site:  _    
     19   
     20 
     21 
    322  
    423 
    5 > #  Not Found  
    6 >  
    7 > The requested URL ` /webmasters/faq.html ` was not found on this server.  
     24** Advanced Questions **    
     25   
     26** General Questions ** 
     27 
     28  1. [ How often will Google crawl my site? ](#crawl) 
     29  2. [ How can I migrate my site to a new IP address? ](#migrate) 
     30  3. [ Why is my site labeled "Supplemental"? ](#label) 
     31  4. [ I'd like my site to return for pages from a specific country. ](#country) 
     32 
     33** Results Prefetching Questions ** 
     34 
     35  1. [ What is results prefetching, and how does it impact my site? ](#prefetching) 
     36  2. [ Can I distinguish between prefetch requests to my web server from normal requests? ](#prefetchheaders) 
     37  3. [ I want to block/ignore prefetch requests. What should I do? ](#prefetchblock) 
     38 
     39**  General Questions ** 
     40 
     41** 1. How often will Google crawl my site? ** 
     42 
     43Google's spiders regularly crawl the web to rebuild our index. Crawls are based on many factors such as PageRank, links to a page, and crawling constraints such as the number of parameters in a URL. Any number of factors can affect the crawl frequency of individual sites.  
     44 
     45Our crawl process is algorithmic; computer programs determine which sites to crawl, how often, and how many pages to fetch from each site. For tips on maintaining a crawler-friendly website, please visit our [ Webmaster Guidelines ](guidelines.html) .  
     46 
     47** 2. How can I migrate my site to a new IP address? ** 
     48 
     49We recommend migrating a site to a new IP address with the following steps:  
     50 
     51  1. Bring a copy of your site up at the new IP address.  
     52  2. Update your nameserver to point to the new IP address.  
     53  3. Once you see search engine spiders fetch pages from the new IP address (typically within 24-48 hours), it's safe to take down the copy of your site at the old IP address.  
     54 
     55** 3. Why is my site labeled "Supplemental"? ** 
     56 
     57Supplemental sites are part of Google's auxiliary index. We're able to place fewer restraints on sites that we crawl for this supplemental index than we do on sites that are crawled for our main index. For example, the number of parameters in a URL might exclude a site from being crawled for inclusion in our main index; however, it could still be crawled and added to our supplemental index.  
     58 
     59The index in which a site is included is completely automated; there's no way for you to select or change the index in which your site appears. Please be assured that the index in which a site is included does not affect its PageRank.  
     60 
     61** 4. I'd like my site to return for pages from a specific country. ** 
     62 
     63While all sites in our index return for searches restricted to "the web," we draw on a relevant subset of sites for each country restrict. Our crawlers may identify the country for a site by factors such as the physical location at which the site is hosted, the site's IP address, the WHOIS information for a domain, and its top-level domain.  
     64 
     65That said, your site's top-level domain doesn't need to match the country domain for which you'd like it to return. It's also important to keep in mind that our crawlers don't index duplicate content, so creating identical sites at several domains will likely not result in their returning for many country restricts. If you do create duplicate domains, we suggest using a robots.txt file to block our crawler from accessing all but your preferred one.  
     66 
     67**  Results Prefetching Questions ** 
     68 
     69** 1. What is "results prefetching," and how does it impact my site? ** 
     70 
     71On some searches, Google uses a special tag supported by Firefox and Mozilla to instruct the browser to download the top search result before the user clicks on the result. When the user clicks on the top result, the destination page will load faster than before. This tag is only inserted when it is likely that the user will click on the first link.  
     72 
     73For example, when a Firefox user searches for [ [ stanford ](/search?q=stanford) ], Google includes the following tag in the results HTML:  
     74 
     75` <link rel="prefetch" href="http://www.stanford.edu/"> ` 
     76 
     77The official [ Mozilla Link Prefetching FAQ ](http://www.mozilla.org/projects/netlib/Link_Prefetching_FAQ.html) describes the behavior of this tag in detail.  
     78 
     79Prefetching may impact your site because the prefetch request will happen whether or not the user clicks on the result, so it may result in additional traffic to your web server. Google only inserts this tag when there is a high likelihood that the user will click on the top result, but clearly this heuristic is not right 100% of the time.  
     80 
     81** 2. Can I distinguish prefetch requests from normal requests? ** 
     82 
     83Yes, as described in the [ Mozilla Link Prefetching FAQ ](http://www.mozilla.org/projects/netlib/Link_Prefetching_FAQ.html#As_a_server_admin_can_I_distinguish) , prefetch requests include the additional HTTP header  
     84 
     85` X-moz: prefetch ` 
     86 
     87** 3. I want to block/ignore prefetch requests. What should I do? ** 
     88 
     89To block or ignore prefetch requests (from Google and other web sites), you should configure your web server to return a 404 HTTP response code for requests that contain the "  ` X-moz: prefetch ` " header.  
     90 
     91    
     92 
     93(c)2007 Google - [ Home ](/) - [ About Google ](/about.html) - [ We're Hiring ](/jobs/) - [ Site Map ](/sitemap.html) 
     94 

  • google/picasa.google.com/support/bin/answer.py?answer=15188&topic=1144

    r246 r255  
    33   
    44 
    5 [ Picasa Help ](/support)    
     5** [ Picasa Help ](/support)    
    66   
    7    
    8 [ Picasa Web Albums ](http://picasaweb.google.com)    
    9 Sign in with your Google Account     
     7[ Web Albums Help ](/support/bin/topic.py?topic=8989) **    
    108   
    119 
    …… 
    1614 
    1715 
     16[ Latest Picasa Updates ](/support/bin/answer.py?answer=53209)    
     17Find out what's new and what's been fixed     
    1818   
    1919 
    2020 
    21 [ Latest Picasa Updates ](/support/bin/answer.py?answer=53209)    
    22 Find out what's new and what's been fixed     
    23  
     21   
     22[ Picasa Web Albums ](http://picasaweb.google.com)    
     23Sign in with your Google Account  
    2424 
    2525   
    …… 
    109109   
    110110 
    111 ** Survey - Help us improve this Help Center by letting us know: Was this article helpful? ** 
     111** Was this information helpful? ** 
    112112Yes   No  
    113113   
    …… 
    132132   
    133133 
     134** Tell us your story ** 
     135 
     136Share how Picasa has changed the way you edit and share your photos. [ Send us your story ](/support/bin/request.py?contact_type=testimonial) 
    134137 
    135138(c)2007 [ Google ](http://www.google.com) - [ Picasa License Agreement ](/support/bin/answer.py?answer=15188) - [ Privacy Policy ](http://www.google.com/privacy.html) - [ Picasa ](http://picasa.google.com) - [ Contact Us ](/support/bin/request.py)