TNA recorded a months worth of Impact shows during their UK tour last week. Yes, they do fill up arenas in the UK and are more popular there than the WWE is over there. I guess fans over there like good wrestling, storylines with a point, interesting characters and are tired of getting their intelligence insulted by Vince on a regular basis. Oh yeah, TNA is also TV14 so you don't have to worry about any kiddy crap all the time.
Starting in March, TNA will permanently be taking Impact on the road every week. The first stop is in Chicago. It only took them ten years but they finally got their heads out of their asses and realise that they need to take their major program on the road.
Hopefully, over the next couple years they can expand enough to give the WWE some serious competition. The only way Vince is gonna change anything is if he gets a swift kick in the ass from the competition like WCW did in 1996.