Well the difference between having a winning and losing session.
When I thought about this post it was after i'd had a 1 hour session at $2/4 on fulltilt and started off badly with some horrible beats but I gradually worked my way back, including winning one 20BB pot when my pocket 3s flopped a set.
Thing is, I ended up about $50 for the session of about 200 hands. If i'd lost with that set, i'd actually have recorded a negative session. I guess that's why variance occurs and I often do have negative sessions or tables, as my edge is actually relatively small.
Having said that, I then put in a 2 hour session - jeez i'm racking up the hours this month come to think of it. And in that session I managed a fair heater, playing a fair chunk of $1/2 on bodog and again a heap on Fulltilt $2/4. I think I ended up around 60BBs without actually ever being down for the session. That being said, it was fairly swingy, as I was seated to the left of a maniac on two of the tables I had open. One was running at 90%/85% ... and the other at around 90%/60%. I did donate to them a few times, as I quickly realised that even if you had a single pair it was worth calling the river, but they also paid me off with complete air that they's raised every street on more than a couple occasions.
Also played in the freeroll again, although don't know if I will bother any more. My late tourney game sux I think. Admitedly I havent actually read either of the harrington books so it serves myself right. I made it into the top 10 and had about a 8BB stack when there were two limpers and me on the button looking at As8s. I decided to push all in hoping to steal the limpers and blinds which were a decent chunk of my stack. Unfortunately both limpers called showing 77 and KJo and the board missed everyone booting me out of the tourney. I suspect in hindsight I should have waited for a better spot ... but i'm not absolutely sure of that. Maybe I should do some reading ....
Current Bankroll: $13,300 (should also be boosted by some rakeback shortly)