We just had a new user from Nigeria(hah!) post spam as an answer, and then as a comment to his own answer. Sample:
Loan offer @ 2% Do you need financial help, A loan to pay up bills, debts or start up business of your choice? then your prayer has been answered, contact now with the following information: Full Name.......
I deleted both, obviously. In cases like this, is it worth suspending the user, or is policy better just to delete the offending account?