Currently, I have 3 niche sites, they range from 10 to 35 pages each, and I am actively adding content to two of them, the third (the one that has 10 pages) is more-or-less for PPC purposes.
I also have 2 general websites: one happens to be my first attempt at affiliate marketing... which is now changed into a generic business site (connexins.com) and I also have a resume website.
I also started a science-based website a while back that has 3 pages right now
but I kind of put it on the back burner until I graduate in the Fall of 2008.
I have a series of websites coming soon (all about the same topic, but with slightly different/specialized focii)... still in the research phase... I am very excited about those sites, because the concept is unique... kind of exciting, but also kind of scary.
Sherif