I got in about this time since I feel it has bottomed out and may not really go much lower.
Feel from re-searching that it has massive potential and it's at a point where it is going from R&D to commercialisation. The consumer of these products may not be bothered but government policy and the pursuit of green credentials by the supermarkets (as long as they can save money with it)may decide it's fate. However, until any contracts appear and it's start making money, it may not be invested in. It's crunch time!!
Sirjc did a good comprehensive table of good and bad points. I feel that alot of it's bad points have or are becoming irrelevant.
Cannoncan is always be-rating the stock saying it's going down. I agree it being necessary to take an objective view and look at bad news as well as good.... I just wish he would provide us with some credible news to justify his views. (maybe hes' moved on).