I think that investors should be informed about Groupon and its founders. It is especially important if there are issues with Groupon and its founders.
I was actually quite impressed with Groupon initially until I saw its numbers and that its major stockholders were cashing out hundreds of millions of dollars in stock pre-IPO. That raised with me huge alarm bells and it changed my opinion drastically.
My extreme leariness of Groupon is based on facts that I've learned as I used to be a fan, although a relatively uninformed one.