I have a blog that I almost update everyday, and according to yahoo there are more 37,000 back link. But I noticed that the updates I am making are not being cache by google it take 2 - 3 weeks sometimes, before I see the changes. Is there a way or does google update cache page evey other day or everyday?
I suggest to gather as many backlinks as possible with higher PR. Because sites with higher PR is frequently visited by spiders compare to sites with low PR or no PR at all.
Its depend on how activities are happening with that url it may happen by the other site ( where you placed your url) or by frequent changes on the perticular pages.
Your site will be updated more often when there are back links from very popular resources like digitalpoint.com
I have replied to your post here: http://forums.digitalpoint.com/showthread.php?p=1433741#post1433741 I hope that will help you. Cheers