* It should let you preview without entering an email address. Right now it's not clear what the site does, and while I mostly trust HN crowd, I would prefer no

* It should let you preview without entering an email address. Right now it's not clear what the site does, and while I mostly trust HN crowd, I would prefer not to give my email unless it's clear what it's used for. * It should accept email addresses with + in then. * Consider using the shortlinks generated by google maps instead of generating your own? That way, the messages will still be useful even if your service has gone down for any reason.