I'd say that limping in later levels is much less useful but can still be used under the right conditions. If you've got an absolute monster and you want action it can be a good idea. Remember that this greatly increases your variance, but also gives potential for a gigantic payoff. This is a debatable strategy, but sometimes it's useful, especially if your in EP and expect a later player to raise. Another situation when it can be good is similar to the early tourney situations that you described. If there are several limpers in front of you hand you have an SC or small PP, and both you and at least one of the limpers have at least 20x bb (the more the better, as you are getting better implied odds). Remember, you have to have chips to win them. It doesn't matter if the other guy has 1000x bb if you've only got 5. You can only take 5 from him. Limping can also be done in the SB with PP or SC (and sometimes non suited connectors or suited non connectors) given the huge pot odds.


Will