to end all debate...

Collusion can happen anytime. I know the poker sites attempt  to  catch screen names that play on same tables too often. But you could have 5 accts. girlfriend, mom, bro , whatever, all with different IP addresses,  and if you play high enough stakes, I mean like 2000 buy in, not 50000, then you ARE going to play with alot of same people so that is no help to the sites anyway. Of course cheating happens, is it rampant? I have no clue but does it happen? yes yes yes

PS  I do not think sites like pokerstars, partypoker etc etc are involved, just players    But would I be SHOCKED if I was proven wrong?........no

my old roommates brother was one of those guys living in that house in Vegas.... This guy plays over 1k tourneys day in and day out, usually 3 to 4 at a time.... it was crazy how much he plays he came over one weekend with his laptop sat down and jumped in 3 tourneys for 1500 each.... he has won 50k in a toruney before and has also droped over 20k in a day playing poker... i asked him about players using diff IP address to fill a table and he said they would never do that.... these tables can track how many players play at a time and how often they are playing with certain SNs.... but i do believe these sites do use "bots" to play games... i have been on a few sites that track your percentages on calls/ raises  on each street... they can track everything and find out your tendencies very easily... i have watched a high limit table for about 30 minutes to see how these guys play and one of the SN was playing like shit. i mean one of the worst players ive seen, but yet he was playing the highest $ table on the site.... and he was calling all ins with 10 J and even 7 10... i couldnt believe it... but he would take the pots down against KK ar A K.... i became very suspious of some of these smaller sites and i feel that they could very easily have someone in there that can see the entire tables whole cards and possibily have a button to control the flop, turn and river... i would not be suprised at the least.. Money is the root of all evil and if you had the chance im sure you would cheat to make some easy money on a daily basis....  also BJ can be rigged... they could easily set up an X amount of hands for when you sign on.... i have played a few times and couldnt believe the pulls the dealer was making to beat my 19s and 20s and even sending out bust hands.... imagine you get delt a 12 or 13 with the dealer showing a 9 or 10..95% of players will hit they send you a 10 and bust easy money for the house.. they can do this a number of times in a row to make you go on tilt and chase to lose your entire account... they could also shoot you a 19 or 20 with the dealer should a 5 or 6... they flop over a 5 then a 10 to clean house... they can control a game very easily with placement of cards....   i have found the best times to play BJ on a sportsbook site is during a very busy time of betting... usually during NFL when they have to worry about lines.... but when you play late at night your never going to win money easy as that, and even when you do its usually starting out small and then once you up your best they take it all back to make you deposit more.. everyone has been there and if you say you havnt you are lying to yourself.... i swear they either set up an X amount of hands for when you sign on, or they have people sitting and choosing what cards to throw out depending on your bet size..... never trust the internet you never know whos on the other side....

collusion with on line poker is definitely a risk... i manage to make a conservative profit, but i think this happens a lot

MORE IMPORTANTLY, i can ashamedly admit that i once got into an online BJ habit.  I felt like they sucked me right in.  Profited on like 90% of my sessions for about 10 days.  Nothing major, 25-50 bucks at a time and it was adding up nice.

Then i wen thru 2 days where i couldnt win a thing.  Dealer would routinely pull sick sick cards.  If i did get a good hand I would push, very frustrating

no scientific evidence, but for the love of god, stay away from online black jack

MATTER OF FACT, PUT YOUR MONEY INTO CD'S