Spammed everybody with a welcome message

Since we're starting to get a decent number of new people coming in (and I'm hoping to keep that going), I just set up a welcome message that will go out to all new users when they register. I also went back and sent it to everyone that's already registered just to make sure everyone sees it, since I think the site hasn't been very good so far about explaining itself. A lot of you probably already knew (or figured out) the info in it, but maybe there's something new, like the tracking of comment visits if you don't already have that enabled.

More stuff coming soon, I've got a few things in progress and have also been talking with a bunch of people about the site.