did you see peter norvig at the SF singularity summit last month? he discussed predictions from an early 1900s ladies home journal article. there seemed to be no pattern in what sorts of things came true.
i think the idea is more funny than self-helpy. i know scores of women who'd subscribe, if only to banish ex-boyfriends from their inboxes (temporarily).
I'd love to see someone create a virtual lock-box for emails you're tempted to spend too much time re-reading and analyzing (like those from past/future romantic interests). You'd forward the email to another address, which would somehow remove it from your inbox and return it to you after a standard amount of time (two weeks to a month, say).
this idea might make women look bad, but i have no problem with that if it also makes some of us rich.