Blogads now has a page that has all of it’s mini-networks listed. I’m a part of the gadget network and have found a very slight increase in ads being placed on my site as a result. I suspect in time this (and other programs like it) will become a more popular way for smaller blogs to attract bigger advertisers (by pooling their impressions with others bloggers).
I wonder how to get blogads on my blog. It seems they are not open for publishers now. I tried a similar text service – adbrite and no luck with finding advertisers yet. I keep on quoting lesser and lesser, but no luck. Adsense is a no hassle and surefire success solution.