They are such fun ain't they. Used to do the scambaiting as well with 419eater but got too tedious and time consuming. If you want to send a reply back just setup one of those throwaway email address, Gmail or there are some which have a life of a week or so and flick the baiter mail to that and go from there.
I used to send them huge attachments, large files of rubbish, old DLLs when they asked for pictures, filled out forms, Western Union, passport details etc. Kept them running around trying to decipher the male bovine excrement. And keep resending to fill up their mailboxes. Just to annoy them.
Still got a few remote email accounts out there that are designed to attract the mugu boys. Check on them now and then to see what's happening.
But Astronomy took over so there is no money for the mugus to scam from me now ...
I can't afford to pay their 'fees'