From previous posts I see you're still up around 100%, so all in all, not too much of a problem you're having. No doubt others are worse off, but again, to each his own. As an investor, to a large degree you place your faith in a company and its ability to deliver what it says it will deliver.
There's no question the technology is worth investing in, no matter where you go. And I have faith (based on Dennis' track record) that they will deliver as promised.
Plus, cap and trade alone will shine a light on the industry enough for new investors to pump money into start-ups like this. Throw some revenues in and .07 is a no brainer.
It's my opinion, but selling at that point would be a mistake long-term.