I made a submission here about it a few months back: http://news.ycombinator.org/item?id=3026892
In terms of mailinator being blocked . . . if that's the case, he's probably in the database http://www.block-disposable-email.com (as are my domains). The guy is pretty quick at finding at adding new disposable email domains.
I plan to add a few new domains on every now and then to see if I can at least keep some getting past his filter...
(biased creator here)
yopmail.com - any address (like Mailanator) and allows download of attachments directly
There are a ton of these available, just depends on your specific needs. I regularly use them for signing up to those sites that need sign-up before access to a file/article/image (e.g. forums).
I've also used them in testing web apps, using Selenium to grab the email address and registering a user and then going back to check the welcome email had arrived.
I'm currently floating in google near the top of page two =/