re: Poker & Running Bad; Take A Break Or Move Down Limits?
I think it's a personal preference based on a number of factors.
Moving down limits is good for bankroll management and a reduction in the skill level of your opponents does wonders for that bruised ego. But one thing I find is that occasionally the ego boost can overshoot a bit and you don't give as much credit to your opponents once you return to your normal limits. Maybe a bit silly, but it did happen to me once
One thing to beware of when moving down limits is that say if you go down to 0.05/0.10, it can breed a few bad habits if you stay there long enough to change your mindset. Say, a lot of the time you can probably win with top pair top kicker in 0.05/0.10 (because people play with Ace-crap), but this may not hold true to your usual limits.
Walking away I find usually does a sufficient job of getting rid of the "running bad" mentality. It mostly helps if you get yourself clear headed and remove the mindset that you are running bad.
It's probably a good idea to move down if your bankroll is in dangerous territory though.
Hope that helped
P.S. daguksta, I think someone once wrote something on chasing losses to do with how when you lose half your roll you lose 50% but to get it back up you need to make 100% of what you have remaining. Think it was under managing tilt or something.