I lost close 300 on my personal account, now down to 3300, my other accounts are similar. i think overall it's a good thing, gotta make them accounts look like they real
Selling your account is against the T&C last time I looked at them... although they tend to change regularly enough.
Don't think it's really that much of an issue. If you're running an automated account, it just needs a decent gimmick and a believably hot chick.