Trying to help high school students learn about all the steps in higher education with a nonprofit -- http://www.realitystep.org. We haven't launched our main product yet but just conversations with students and teachers have made it worth it so far.
FYI, I submitted an app (http://memn.io/) to this an hour or so ago and while I don't see it in any publicly available section, I am getting more than a few hits with kickoffboost.com as the referral. Playing around with your URLs showed that you can just increment the number to view any submitted product. You might want to switch to UUIDs or at least add more security.
We don't change codes in between signup attempts with the same email address, so the original email/code combination should work. If you keep having issues and want to help out, it'd be great if you could an email over to [email protected] with your email and browser/OS.
We'll fix the tab bug, thanks for letting us know.
On http://memn.io/app.html (you won't see the link for some reason if you have Ghostery installed), you should be greeted with a sign up page [1]. If you have already made an account, you can click the "Sign In" link in the top right corner to switch to the Sign In form.
If that's not working, I'd appreciate it if you could email [email protected] with your browser/version/OS.