I usually just go to http://www.anidb.net
to find the groups subbing an anime, and then if it's recent or new use http://ji-hi.net
to compare the subs.
I rarely watch stuff while it's airing though, so I guess you would do things a bit differently. I guess I just check my favorite sub groups to see if anybody is doing it.
As for the site you linked, I decided it's **** after clicking ben-to and seeing that gg got a "C-". Some of the reviews are alright.. but I can't trust anything that would give good subs for a show that low a grade. They also don't update. Obviously used a v1 for the first episode.. which is fine if you're watching it as it airs I guess.. but even ji-hi updates when a group releases a v2 or a v3, which gg did. Edited, Jan 18th 2012 7:33am by Deadgye