As long as the bets are decent sized..it's ok to fold. If checked to me after I made a preflop raise,I will bet 90% of the time. However, if a decent sized bet comes to me and i'm holding two overcards, I'm not going to call. Usually folding is your best weapon in this scenario.
Though if they bet minuium that usually indicates a low pocket pair..and I will raise the size of the pot. They fold probably about 3/4s of the time if they bet min. in front of you and you raise them a good amount. At least for me at 1/2 anyway.