I had a really bad downswing lately. $100+ at 5NL, and I finally realized why. I suck! But I used to suck a lot less than the players I played against when I had my winning streaks of 10 buy-ins a session, and the reason couldn't be more obvious: weekends!
I used to always play exclusively on weekends and almost not at all during the week. A month ago I had some time to play during the week, and just kept loosing. It was a bit of variance too I hope.
Now I'm playing on a Saturday evening again, and oh boy... You know spending a saturday at home playing poker online spells looser right there, but it couldn't be more literally true. I don't have to do anything here, I'm just waiting for them to give me money.
The difference is just unreal. During the week I constantly leave tables because it folded to the BB a couple of times at FR. And now there's half the table seeing every flop! This is on PartyPoker.
So anyway... if you suck, but you want to beat a game every once in a while: saturday night... 5NL... un-not-beatable!
You obviously have to know how to exploit aggression and calling stations, and you shouldn't be too emotional about bad beats, but if you can then this is a freakin' goldmine.