i have close to 50, plan to build more...but it's a headache trying to keep up! i have them hosted on a reseller account so it's a lot less expensive.
I am running about 6 or 7 sites, but I am planning to run more. I am considering to sold some of my website, so that i can manage funds for new sites.
I currently own a total of 4 sites. 1 is my porfoltio (for my website & graphics design services) and the other 3 are sites built for adsense use.
2 Live 1 olmost ready to be online and 3 more in difrent stages of development anywayy i will never have more then 10
I have 60 sites: 33 afflaite sites 3 directories 5 business 14 adsense 5 blogs (Including a personal blog) I do have a small team helping me. We normally spend 50% of our time up-dating/adding new content and the other 50% building/buying new sites.
I have the same .. and a ton more I just park .. it is really hard to devote the time to so many sites.. keep your numbers small .. if I may suggest.
i have 3 websites, i plan to have 10 more sites in the next 3-4 months. am planning for some directory sites, some article based and some technology related sites. cheers!