Been here a few times -- not the newer place in Cranberry but the older place just south of there, in the McKnight area. It was very tasty too. I'm from Texas so I tend to hold BBQ up there with 911 heroes and Jesus -- and I can certify that this place can do a mean pulled pork. It is tender, warm, seasoned and delish. Seriously, I've been to a lot of BBQ places around PGH and their meat is often more effed up than a sack full of hangers. But The Flame does a good job.
A note for people who are in to BBQ. The Flame, like almost all BBQ I've had in western PA, is not sipcy like we've got in Texas. It is sweet, like that found in and around Nashville and the Carolinas. The Flame is just like that -- sweet BBQ sauce from the south Atlantic region of the US.
Also, the tea they serve is gross. Its bottled by some local company (I think) so its not like they brewed it there in the store -- so I'd skip the tea. The potato salad is good. Mac and cheese is good too.