I like a lot of posters here, including everyone who posts on Media Create, COMG (Boutros needs a medal for this thread) or any other thread made for japanese games, news or sales. Conference threads are also fantastic.
The three posters I read all the time, therefore the superstars of the site, for me are:
d21lewis
Rolstoppable
and Badgenome
And I hate/love Smbu2000, because he buys all the good stuff (and understands them, the nerve!)
I was going to start a list, but realize there's too many, like way too many. So I'll just remember two that are somewhat absent right now:
Lestatdark - I enjoy his pokémon knowledge a lot.
Robotechheaven - I don't remember much of what he posts, but I remember liking his posts