Ad Farm is a text advertising network that has recently sprung up. It remains to be seen whether they're repeating the same old mistakes, making brand new ones or doing something cool.
Micro Advertising - a way to make niche internet publishing profitable?: "It's all about targeted micro buys of advertising space - the old principle of getting the right message in front of the right group of people. Buying 10,000 impressions of your message in front of a very targeted audience for a low fee. " Thomas has created a Yahoo group to hash out the issues further, if anyone's interested.