By not working you mean sites won't let you register with e-mail addresses ending in lhsdv.com? Or that they do, but there's some issue with 10MinuteMail.com itself that doesn't show you the e-mail? If it's the former, then not much I can do, other than rotating domains every few months, which I do. If it's the latter, email me with an example and I'll try to fix it. devon@digitalsanctuary.com
Maybe you can have people donate their junk domains that they bought out of whim. I'm sure every HN reader probably have a few dozen domains that they let expire every year.
