Parking domains - anybody with insight?

[johnegood]

I recently received a $105 check from group that I had never heard of. It turns out, after some research, to be the company that bought a domain parking service that I had put some domains at years ago.

For several years, I made nothing. In the last four months, one of my nine parked domains, starting earning money. This month it made $85. I'm thrilled.

Since I have dozens of idle domains, I'm busy parking lots of them. I'm looking for info on the best parking service, is it a total hit or miss business, is it worthwhile to add my own links, is it more sensible to just look at the keywords that they're optimizing for and then do a few pages of my own with adsense and some similiar content, and what percent of the total revenue is my parking service paying out to me.

I actually share my numbers and the domain names on my blog with is listed on the side. Visit the blog to discuss it.