I just received yet another “phishing” attempt from someone trying to get me to give up my eBay account information. It came to my Gmail account, and like most such attempts it was a painfully obvious fraud.
What was most impressive, though, was how Gmail handled the message. For starters, it landed in my Spam folder, with a big red banner at the top of the message warning me “This message may not be from whom it claims to be.”
Even better, the URL in the message had been disabled. I was able to dig deep into the Gmail interface and find the HTML source code of the original message, where a link to the phisher’s Web site was buried. But that clickable link didn’t survive in the message that actually landed in my Inbox. And finally, the More Options button on the message window included a Report Phishing link, which I used.
Very nice work, Google!
Oh, and I have yet another stack of 50 Gmail invites, so if you’re looking for your own Gmail account, send a note to edbott (at) gmail.com and I’ll send you an invite.
Ed Bott 
There are some people using Gmail as a spam filter – see http://mboffin.com/post.aspx?id=1636 . With features like this you can see why.
I can’t tell you how many frustrated replies i have had from users who have had my links blocked by gmail.
I find that it blocks any links to asp pages, which means that often I send or recieve from someone a link only to find that the idiots in Gmail think that they know better than I do which links I wish to see.
If they need to, let it popup an “Are you sure” box, which is what Yahoo mail does to the same sort of links.
Sort of like this company that makes an overly eager word processor that always thinks I want to indent lines or make numbered lists, or to concantate spreadsheet tables, etc.