Easiest way to spot a scammer is unfortunately listed 4th in Diamond's post.
- Anyone whose posts mainly consist of spam and/or meaningless posts such as "+1" and "nice post"
Just check the post history. No scammer will take time to make decent posts before he can reap off some newbie.
And go to the bottom of it.
Get used to the user written style from the earliest post, then compare it to the one where he asks for a loan.
This protects you against bought accounts, too.