Yeah, there's a lot of places that won't allow "throwaway" e-mail addresses from those and a few other domains. It really helps cut down on the riff-raff. I was going to suggest it, but now that you brought it up, the reason I didn't is twofold. One, many truckers simply don't have a permanent e-mail address. I know several who's sole Internet access is via an Aircard, which doesn't come with an e-mail address, they don't have an ISP at home since they're never there.
Between moving a few times and changing cable companies and satellite Internet, my e-mail address would have changed a lot over the last 10 years or so, which is why something like hotmail or yahoo or gmail would be perfect for someone like me. But because a few places wouldn't accept an e-mail address from a throwaway domain, and for other reasons I won't go into here, I pay a subscription for e-mail hosting on a secure site in Oslo, Norway (where there are very strongly regulated consumer and privacy protections hehe), the same host that many of the largest businesses in Europe use for Web and e-mail services. (It's $50 a year or $100 for 3 years. It comes with 10gb storage for e-mail, 1gb storage for files, 1 e-mail domain, 20 e-mail aliases, and 1 Web hosting account).
The other reason is Hotmail (Windows Live Mail) is becoming more and more popular with the addition of the cloud computing of things like Windows Live Office and other applications that are integrated. And, gmail is now mainstream for both businesses and regular Joe's. Being able to tightly integrate the many services offered by Google into a single interface is very attractive, and a lot of people are moving to gmail not because it's a throwaway, but because of things like Google Calendar and Google Docs, not to mention the seamless integration with Android-base cell phones (I just got a Droid, it rocks) with additional things like Google Maps, Google Earth, and the very good turn-by-turn directions that come as part of the phone package.
Maybe an admin survey of existing e-mail addresses would be in order, to see just how prevalent that these throwaway e-mail addresses are on EO. Might be a significant problem to not allow those, or it might be no problem at all. Just depends on how many are using them. But I know several here on EO who use gmail.
bcordell70: Thanks for the info in Firefox. I've never used it or looked at it all that closely. If I ever want to go anon I've got a proxy function here that will use a different IP every time I click on a link.