I have started a simple project. The idea is to find out how often does Google updates their cache of a site.

I have listed down all my sites and the dates which the cache is updated (main page only). Maybe we can see a pattern from this and optimize further.

You can view the project here.

Hello all,

I have nearly completed the Ask Directory Review.
This young directory looks very interesting and has some very useful features for webmasters. If you are interested, please have a look at their site.

I am sure it will be even better in a few months time.