Hi everybody.....does someone know how often google re-indexs sites?

Thanks,
fuser

Probably daily. My website is re-indexed almost twice every week.

It depends on the site. Some sites they may come back to every hour sone sites ever day and some sites every few weeks or months. Generally if you're consistently adding new content to your site or have a lot of links pointing to your site they'll probably come back more often. It does depend on the specific site though.

My site was indexed twice a week

Google (or any SE) don't index sites, they index pages.

Some pages may get indexed daily, some rarely and others will be inbetween

What chrishirst said. Google indexes individual pages, not sites as a whole.

I've found it depends on the number of IBLs and the frequency in which those IBLs get spidered.

So...if you want to get spidered quickly, get as many IBLs as possible from different sources.

From my experience google visits daily to my site but usally fails to cashe all the pages. I'm only guessing its doing this because i set up a google site map.

Agree with Chris and Adam about indexing pages and not sites. I should have mentioned that before.

I think Google places pretty heavy emphasis on updated content. If it sees you changing a few times, it will come around more often.

If your site is already listed in the index, Google should re-index once every month, more frequently if you have a high Pagerank and update your site often.

euk metioned the heavy emphasis on updated content and this is without a douth true, however a site can be spidered very frequently if it has lots of backlinks as the bot will simply just follow through, this is regardless of the freshness of the content.

so you can edit a post on this forum no, boo! Anyhow meant to say that if you submit sitemaps regularly you can most likely speed up the indexing process for your site, sitemaps are particularly useful for those high value inner pages that Google might not find straight away.

Yup, sitemaps help a lot with larger sites, especially your using php in the links.

php can be handled quite well by google and others these days. When the URLS get ridiculously long though, thats another matter.

u can use this code in ur header part
<META content="10 days" name=revisit-after>

change the days part and google will index in ur will

Google actually will ignore that meta content. The only one they'll pay attention to as far as visiting the page is if you tell them nofollow. They won't come back faster because you tell them to though.