My sister sent it to me, so I thought it was a good one.

It is - if you want to risk giving someone nerve damage. There is also always the risk that the other person will overpower you and use your spray on you. I believe the pepper spray disables someone sufficiently in the short term without disabling them long term.

Anyway, it's not untrue. It will stop an attacker as effectively as pepper spray. The range may be longer, too.

I guess, with things that seem to be good tips, it's good to get the source. If it's just passed from person to person, snopes is worth checking. If the source is a reputable magazine or newspaper, I'm more likely to trust it. (But not online sources. Yahoo! often publishes blog entries as news stories, and I've seen far too many bit of misinformation in them to trust them without checking further.)

Well I don't believe everything on snopes either, I just won't post tips anymore.