AOL are planning to charge for emails. Mass mailers will be able to pay for a higher priority delivery, bypassing the AOL spam filters and ensuring that mail is received directly in the end users inbox.
This is, obviously, a bad thing since spammers will be able to pay a small offset to ensure that their messages are delivered direct to the end users inbox, whilst legitimate messages will face the AOL spam filter gauntlet. Programmes such as this will only see a rise in spam, and a fall in the success rate of legitimate mail being successfully delivered.