[bastijn]

Apart from the comment on personal information, which I totally agree with (came here to comment just that), no free demo will diminish the people who try.

Every product demo should have at the very least a demo account or other means to try the product without registering. Period.

[camidealweek]

Thanks for your suggestion. I can have some demo account for testing, but I don't know how I could support multiple accesses from single account. Let's see what I can do.

[bastijn]

If you have a single account and all people running the demo share a session that is already fine. Even if other users add all sort of things that's fine. Just reset the account state every hour or every day to start afresh.