The 3 rooms are "skins" of the same i-poker network - which is no different than, say, Empire Poker and Party Poker
sharing the same network of players. I really hope you understand why you can't be logged into Titan and CD Poker at the same time from the same computer...this should be self-explanatory.
No, online poker is not rigged...and seeing networks of rooms with the same player base doesn't "make me think" it's rigged, either.
I'm not sure what the point of the OP was, now that I read this again - I feel like one of the kids in the auditorium right after Billy Madison ranted about the Industrial Revolution.