Well, I make a full-time income from my sites. I have... maybe 20. A lot of them are of the type that I put up years ago and lost interest in. Because they make a couple dollars a day, I've never cut them lose. The majority of my income comes from 4-5 sites. One I update daily and the others once every week or two.
I have 1 main website and still running now. I also heard people have over 100 websites and mainly focus on adsense tactic, some of them earn some great income.
around 14 but they gonna be gone, since we start a new project 2 months ago. I Make enough money to live, hope to do it better by 2008
I have about 22 and about 11 are making money and the others are just sitting until I get time to mess with them because I run and make all necessary changes on all of them so it can be a little time consuming.
There are many people on this board who have 100s or even 1000 websites. The majority of them are MFA sites that require no maintenance. People who runs these generally think that if the site can make more than $10 per year then it pays for the domain. I personally have around 12 sites, 4-5 producing income ~$800 per month