Isn't this just going to produce a bunch of incomplete crap? Notable that the announcement page itself is displaying a broken html tag (as of this writing).
Might be more useful to think of a real project you've been meaning to do, splitting it into day-sized chunks, and working out a schedule for completing those. Don't be too strict about this either, otherwise you'd risk getting burnt out after a couple weeks.
The real target shouldn't be 'make X websites.' It would be make X sites until there's one that clicks in terms of your interest or income potential and you can devote the rest of 2011 to it.
I think this is more about self-improvement. If you have to launch a website every day, you're going to get pretty good at it. But it might be easy to get into a rut where you an only launch one kind of website. So by launching 365 websites, Gershon's going to get a very flexible, very fast way of thinking about launching a website.
There's much to learn from incomplete crap. It's like an artist making sketches for a year. With dedication I have to believe it'll produce something of value, and something new.
Might be more useful to think of a real project you've been meaning to do, splitting it into day-sized chunks, and working out a schedule for completing those. Don't be too strict about this either, otherwise you'd risk getting burnt out after a couple weeks.