bankroll

[matt berkey]

I play roughly 5 30+3 or 50+5 SnG's a day and generally place in 3. However, I've noticed myself only cashing out a couple hundred bucks at the end of the week. I catch myself taking risks once I garner some cash such as multi's, step tournys, and the occassional 100+9 SnG's. I guess my question is can you build a significant bankroll strictly playing online tounys? And is it a bad move to put my money in play else where, such as the big multis?