So don't bother playing online. Your character and all your cash and assets will just disappear. They brought out a patch to 'fix' the problem but it still deletes everything.
Most of the problems have been fixed eg money and cars disappearing (well from my end anyways)
I've stopped playing the story mode all together (54%) and I'm just playing online mode. Man it is fun. Create crews, do joint missions, earn RP (is like XP points) to level up your character, I'm currently 17 or 18 at the moment with about $120,000.
You can do missions with your mates, eg take out the drug dealers and rob them for their Meth. Stealing car jobs. But if you don't feel like breaking the law, you can do racing games, cars, jet skies even playing Tennis, Golf so much things to you can do online with your friends. For completing the mission or finishing the race, you will be rewarded with money and RP.
One mission I really enjoy doing is the "Survival" basically like "Zombies" from Call of Duty, complete the waves and you will earn big bucks for it, that's how I got most of my $$$, but if you're going to do it I'd recommended getting 4 players, or else you will be pumped by the end of wave 4-5 doing it alone. Unless you're like really good :thumb:
OMG! I wanna play now.
Oh yeah one last thing, if you feel like going on rampage and killing other people in the free roam mode you can, but beware if you piss certain people off they can put a bounty on your head!! LOL