10p worth

I posted quite a number of ideas on this blog. In amongst them there might be a profitable product, although there would obviously need to be a lot of product development. My point (I'm getting there slowly) is that these ideas have some value, even if it is only small (e.g. 10p), and if something has value there may well be a business model capable of extracting that value. This concept is not new, I remember a website called ideadollar.com that was effectively the same thing, but I think they went bust. So the question is this, how can companies realise the creative potential of the public to generate competitive advantage?