Honestly? I don't think there's much you *can* do technologically wise. There comes a point when you have to simply rely on intelligence and education.
I got another one from some paypal phisher today warning of dire consequences if I don't verify my paypal account... 'sif.
I've FINALLY got my family trained to CALL ME before they click on any of those links. Now if I can just get them trained to ignore anything of that variety it will be a win. Gmail recently added in some good anti-phishing measures and they put a huge red bar across the top of any suspected phishing emails warning that this is potentially a scam. That's about as far as I've seen anyone go and I'm POSITIVE some people still simply ignore it and go ahead and give up the goods.
It's not only the people that fall for these that are ignorant, though. The crooks can be pretty ignorant too. As an eBay employee I am REQUIRED to post on all my auctions that I'm an employee and provide a link to the rules I have to follow. That still doesn't stop people from offering me off eBay auctions, offers for scam escrow, and even the occasional offer of "reciprocal shill bids". They all promptly get reported and I've had the pleasure of seeing at least a few of them NARU'd.
-- Gary F.
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Eeyore, Original Owner -- Mk II 80 Gb, Blue
S/N #090000803
Tigger, 2nd Owner -- Mk IIa, 80 Gb, Blue
S/N #40103789