well what I was going at was the MFA sites when I said crappy. Meaning getting a ok url or existing domain and sripping everything off of it basically except for ads. There are MANY quality sites that are small as in a few pages of good content. So a small site with good content could be the BIG one.
The $1 per day idea is the dumbest crap out there. "If I make a website and it makes a dollar a day, then all I gotta do is make more websites." Sure, so if you make one million websites and they all earn one dollar per day, then you make one million daily? Who's doing it? Using one website means you can "concentrate" your link-building and content adding efforts into one site, and probably have much better results. I think domain registrars sit around the forums promoting the idea of having tons of sites.
I want to make about 10 successful sites, just my personal preference because I like making sites. But yeah, 1 or 2 would be great also make sure it's unique to the core
I think for many, the ideal scenario would be to have 2/3 fairly big sites and several (4/5) smaller, but good quality sites. This way you are less exposed.