What I have done, on the advice of a facetious website something like SpamBaiting or whatever, is to post the following simple link.
DO NOT CLICK THIS LINK YOURSELF.
http://resources.on.nimp.org/
DO NOT CLICK THIS LINK YOURSELF.
The link opens a heinous number of windows for an indefinite amount of time. You basically have to Ctrl-Alt-Delete and end-process your browser to get it to stop.
So, it's no real harm, but you can imagine the Scammer's delight when you email them back with a positive reply, and they eagerly click your link (to your bank account? your landlord's survey? be creative!) only to be *punked*.
Anyway, just a suggestion.