Playing from the SB is one of the trickiest things in hold 'em. Let's say you have only one limper. You are getting three to one on completing the small blind. There are very few hands that are 3:1 behind any two random hands. As flafishy says, cards like 96 are certainly not a bad hand to take a shot on.
However, and it's a big "however," you are always out of position. This is huge. And you must be willing to let it go. Both of these are risky for most players. If the BB raises, can you throw your hand away? If you flop a small piece, what do you do? When it's suggested that you not play from the SB unless you've got a good starting hand--as in one that could be played from UTG--or you are experienced and better than average player, it's probably the best advice you can take.
The object of playing from the blinds--Lose the least money you can. This means throwing away any but premium hands is most likely the best thing to do.
(However, again with the however, if I catch any of you NOT completing the SB when it's folded around to you, I'll beat you with a rubber hose and sentence you to a month of reading 2+2 posts!)
CJ
"Are the players better as the stakes go up? It's not an exam; it's a buyin." Barry Tanenbaum