Let's start with the fact that if that entry got 9 votes without anyone asking these questions it might means that most people got it and you were the only one not to understand the purpose of that website - that alone would be completely legitimate.

However what I find disturbing is the way you chose to phrase your questions. It's the kind of unconstructive feedback that serve no purpose other than criticize a website or its author.

It's a tool that enables you to create live demos of your widget on any website. Assuming that you have a widget that you would like to demo on a potential customer's website, using this tool you can do that in few seconds.

Regarding the email request, we have tried to build something simple without registration. So we are asking for the email to track how many different ppl are using it. We won't share your email address with anyone and we won't send you promotional mails.