One of my sites - which is still PR 0 - was getting a site:xxxx result of around 50-100 over the last two weeks. It's now jumped to over 1500 in one day - but still PR 0. At the same time I got over 5000 visits from Ask Jeeves/Teoma the same day. Should be no connection I would think - any ideas?
I noticed that Google included many new sites in general in the most recent crawl. Maybe that's the reason.