g1smd - 9:28 am on Apr 28, 2010 (gmt 0)
The page has been changed and new words have been added that were not there before. The cache still shows the old version of the page, but the page shows up for the new words.
Oh, that's normal too. There are separate databases that feed:
- the displayed title
- the displayed snippet
- the public cache page
- the "ranking"
and each of those updates on a different cycle. There's also the Supplemental databases that return results based on "historical" content - content that used to be on the page but no longer is, or for URLs that are now redirecting or are returning 404.
You'll see this in action in WMT where some reports update daily and others at longer intervals.
There is a "cached" link below the result. However, if you click the "cached" link, you get this message
This is an indication of the different cycles getting out of step. They have assigned a DOC ID and linked to it before they have actually made available what they have already spidered. That doesn't usually last more than a few days.
When there is a cache page on view, it's also interesting to see the cache date update daily, and then pause for a few days now and then, and occasionally drop back to an older date several days or weeks ago, before reverting to a more recent date and then continuing to increment.