They might be article sites that won't really need much work once finished? Otherwise that would be a TON of sites to run..
May I ask those having more than 20 websites, what are your earnings distribution across your websites? Do you have 2-3 winners and all others make peanuts or the earnings are distributed uniformly, more or less?
I have around 6. People who have a bunch of domains and websites, do you own your own webservers? CIW Jared Morris