[slush420]

it all depends on the people you're playing. if they raise preflop more than 8% of the time, it's safe to assume they would have raised AQ and AK so why not raise AJ? at $5 limits you can and will get paid off with this hand in the long run. however if they don't raise PF very often at all and you believe they would limp with aq or ak, a fold is fine here.