Limping behind limpers

[twankerr]

Playing 1/2 6-max I got in the habit of limping behind a limper with hands like QJs and KTs. Normally, I would open raise these hands if folded to me in any position. I'm not sure why I did it, but I think it was just my selective memory remembering all the times someone would cold-call me with A4o (a better hand, but obviously not one to be cold-calling with).

Moving up to 5/10, how big of a mistake is it to limp behind a limper with a hand like this?

[J.R.]

who knows, but overall its more than it was at 1/2

[Girchuck]

Depends on a limper. If limper is passive, but not very loose, limping behind with KTs is fine, provided the blinds are also passive or average. If limper is passive and loose, these hands are better played for a raise, however, if limper is the any A type limper, and many of his limps
are aces, you are better of limping behind anyway.
You should almost always raise, when opponents are weak post-flop, and will almost always fold without hitting the
flop. You should usually raise if you are not on the button and the button is not a good LAG, so that you can have the button.