You're on it ;)
What sort of thing are you thinking about?
If you want to ride a wave of hype, pretentiousness and willy measuring, there's
TGP. More grounded is
Music Radar. If you want highly cynical and accurate dissection of effects there's
FSB. Which can be a little spikey at times to be honest so I rarely post there. Though you'll need an account on there to see the interesting stuff ;) It can get quite techie also as it's all pedal builders.
The demos are the best places to get an idea of what things are like (minus the bull). IMO the best demmers are
Burgs and
Just Nick. You get a really good idea of what the effects sound like and can do with them two. For DIY effects
Jon Patton is with them.
Andy from PGS is really good, but has a tendency to make everything sound awesome. Of the others
Gearmanndude is amusing, but is one of those players that sounds like himself no matter what he plays, which isn't quite as helpful when it comes to demoing gear. Being youtube, crank the res as high as you can with them, but yeah, it's still gonna be compressed as hell. As I say, it gives you an idea.