If you guys ever hold a Pennsylvania JD meeting, be sure to give me a holler.
I think that'd ammount to myself, Bob, and you Bill....

I just don't run into PA guys much. I think they do consider PSWCS their home. I don't personally, but only because I can't abide email servers anymore... I stick with Pittsburgh's local forum since it's the best for the local guys, and that's generally enough PA stuff for me.
I do like to think of myself as a pseudo-PSWCS member though since I did try it briefly, and since the meetings are always on my priority list.
Anyway, as far as content though, I have to agree with Chris that while there's some things Scum has that fulfill a need, I can't say that they're dominant in any way.
I look through the customs area there, however it has degenerated in the past year +, and I think FFURG.com does a better service to the customizing hobby. Rebelscum is generally filled with people looking for praise.
Rebelscum's vintage area has taken a nosedive. While there are still many of the knowledgeable folks there, many have also headed off for greener fields as well, and the truly knowledgeable there don't always speak up anymore. I can't blame them either considering some of the people they've had invade that area.
The older collection areas (POTF2,E1, etc.) are more often than not just BAD conversation... People asking for prices, value, etc. I can't exactly look at that as quality.
Newer collecting areas (OTC, ROTS, etc.) are more often than not filled with A) the condescending, arrogant, ego-manaical pricks who (if they were here) would be (or some even are) banned... B) the "newbies" who come in with the intent of running the show there... C) the kids who are what they are... D) the odd person trying to make conversation good. I stress that D is the minority.
Other Collectibles, Lego, and their film/EU areas tend to have more traffic. More people with more questions and such, but also these areas (especially the film/EU areas where I do go often still) are more and more filling up with what the newer collecting areas have. A lotta jerks, a lotta kids, and a handful of people that it's fun to talk to.
Trading... More people is good and bad. We don't have the issues with bad traders they do, and I have to say that we act more swiftly on any situation that would arise. For instance, Matkatnadam's blatant scalping of the Lava Vader would have garnered him at the very least a suspension here I would think. His beligerence on the subject would've been banishment. Simple as that. Yet there he is at Scum (What the hell happened to "Collect to Collect" and all that ****?)... Is that good? I dunno if that's who I want to converse with personally.
EDIT: BTW, maybe I just don't trade much, but I think I've done 99% of my trading here and 1% at Scum. More people is ok, but it doesn't necessarilly mean you won't get the job done here either. Usually when I need something someone here's willing to help first. AND, the few times I have traded at Scum I've gotten **** from the other end because it's often some new guy with no established record who wants things his way... Again, is that quality? Seems riskier than Ebay to me.
Wuher's is a joke compared to here IMO... Not even a comparison. I'll take less one-liner responses, good moderating, and generally good mature conversation over that. Wuher's offers you some good posts, but you have to find them among the sludge that is 80% to 90% of Wuher's conversation. From entire topics right down to single responses.
Basically what I'm saying is I don't really want to dig through a 12 page topic to see what the conversation between JoshEEE and JohnH was, when I have to weed through blight's, "Hey that is cool", Yodaboi's, "Sahdut upa you mron!!", or several

,

, or

's...
Oh yeah, and the ever present "Me too!"/"I agree!", of course.
Smaller? Less traffic? Maybe... but I think when I break Rebelscum's traffic down to what I ACTUALLY read, it perhaps evens out, and I'd actually say there's more here I'm actively reading and find interesting.
That's my take... I started looking this way when Matt pointed my eyes this way... Long before I even considered a job offer. This was just better. This was where the names I knew and appreciated had gone.
Some stuck by Scum. Some went to GalacticHunter (more than are at Scum by a longshot in and of itself), and the vast majority came here. And more have come over since, so I'll never look at Scum's traffic as anything more than clutter I am labored to pick through to actually read the INTERESTING post. And they sure as **** are rare these days.