Most such services are blacklisted, or very soon to be blacklisted. You can use Gmails and rotate them, and use "." "+" "number" tricks though, but typically, use Gmails is the way to do.
The problem with using gmail variants is it's easy to transform terr.yc.ody+abc@gmail.com into terrycody@gmail.com, and spammers or spammer suppliers can do that automatically.
Exactly, that's the site I had in mind although I'm pretty sure it had another name before (could perhaps also be the reason to why I didn't find it in the first place).
