I am not saying that Bovada or any other site is rigged, but lets be clear, they have a HUGE incentive to rig the cards.
Look at all the things these sites do to try and level the playing field, or give fish a better time.
Why do they do this? Because if the fish don't have a good time, they don't have a site, as all the sharks won't have fish to feed off of and then nobody is playing on your site, and you go bankrupt.
This could all be resolved, by rigging the cards so that fish win at a disproportionate rate, and therefore have a better time.
If winning players stopped winning and left the site, it wouldn't be bad either, because then you would have fish playing fish.
Anyways, I'm not saying they rig the site, I'm just saying, they would benefit greatly from doing so, granted, that they didn't get caught doing it.