Outsource Your Invoice and Get Paid Immediately
outvoicer.com
outvoicer.com
That may not be an entirely bad thing, though. I can just see it getting out of hand if this is not done correctly.
It's also equivalent to a payday loan with an APR of ~38.7%!
Still, though, for chronically late clients that you want to fire anyway, it might be a great alternative to waiting.