Search engine snapshots backwards in several situations

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The Web site in the search engine snapshots Why the regression, probably several cases:

1, the site is stagnant, if the site is not updated in time, search engine spiders will not be indexed to the new content, when the content of the first page remains unchanged, the site snapshots will stay in this time, for example, a Web site in the last February 3 to stop updating, and then never updated, then, The search engine snapshot will stay on February 3, as long as the site does not update, the snapshot will stay on February 3, you may wish to look at the bread net snapshot, the site's snapshot date is just the last article update time, and through the observation of several sites, found that many sites are the same situation, from this point of view, Baidu snapshot represents not the index date of Baidu, but the latest update date of the website, if a site has not been updated, even if the search engines come every day, snapshots will not rely on the front.

2, search engine database problem, if you have carefully observed Baidu snapshot, you will find such a law, query the site snapshot, found that the state has been the latest, but after a few days, then to query the site snapshots, but found no reason to go backwards, and after a few days to see, the site snapshots back. Not only Baidu, each search engine has the same snapshot regression law, snapshots are always up and down, half a month ago, my site in a search engine's latest snapshot is February 13, and half a month passed, the site's snapshot not only did not advance, but backwards, search engine spider visit all normal, why the snapshot backwards? , I think in addition to the search engine itself, no one can explain clearly, since we do not understand, as simply as a rule, as long as it does not affect the ranking of the site can be.

3, the site is down right, this situation occurs very low, if not the site violates the search engine optimization rules, search engines will not easily punish the site, if the site has been in the update maintenance, and the snapshot is still retrograde, a few months of time have not recovered, it is likely that the site was down right, But it's still a warning. Must find the reason of the right to be down, otherwise do not easily concluded that when a snapshot of a search engine back, it may be useful to look at the site in other search engine snapshots, whether there has been a regression, if the site in other search engine snapshots are normal, and the ranking is quite normal, You can observe some time, and then observe the site's snapshots have not recovered. Here's an important reference, the site is not down right, the best way is based on the ranking of the site is normal to judge, if the site rankings severely reduced, cut a long time does not return to normal, home page rankings and the ranking of the pages are down, it should be the site is down the right, the site snapshot of the situation is probably The basics are within these conditions. Bread net http://www.mianbao0.com/feeds, reprint please keep the link, extremely thanks!