Hy all.
I was wondering, if there is any way, to check, when Google spidered a site X. (X is not my site), or how often Google is Google spidering this site X?
I have an idea for start...I dont know if it is ok.. but in Google search often appears url: in cache. And you can see, when the cache was created. Well.. if you have to consecutive times from Google cache, it is simple to calculate how often (aproximately) Google is visiting this page?
I am not sure... But I think you can keep track of that in Google Webmaster tools. I know that Google updates it's Ranking about every 3 months. So, the next one should be by the end of March if I am not wrong.
it totally depends on PR of a site & how early content is added or changes. google crawl static site once in a month while some news site as CNN crawled every minutes
I agree with that of the ''Frequency of quality Content''. My site got an improved PR within the first 3 months of hosting the site, and its gradually in the top ten of Google.
Post frequently, and be conscious of the title keywords too.
Generally speaking, Google bots would frequently crawl those sites with higher PR(above 4) and more frequent updates. You could know if Google is crawling your sites or not via the admin area of your CMS usually.