When people are asking for help.
Step 1 google the addresses given to see how many times they have been passed around.
That's a good point. I'll make sure to follow this advice in the future. Offering a generous "reward" should have tipped me off as well.
What's amazing is that people actually pay for these wallets. What are they thinking? Obviously they know nothing about bitcoin, and yet they think they're going to get rich by hacking some wallet that's available to everyone. Don't they stop to think that maybe the bitcoin experts would have beaten them to the punch if this were remotely possible?