Some money's moving but it's only normal, the real worry is that the supply may be growing too fast. 4,000 BTC are added each day, that's a lot!
Yes, that is the problem. And the supply is ALWAYS growing, even at times when there's no real demand.
the problem is also that the same buyers are not buying more, but the same miners are always dumping more
With merchants also always selling straight out. Its a viscous circle. If people want the price to rise they need investment money pouring in.
I think I recall hearing that some companies like Overstock.com were actually keeping and not selling at least some of the bitcoin they got from sales. I think the biggest detriment to btc value is the inherent fear and uncertainty caused by the crooks who do various crimes rather it be Mt Gox or just hacking a weak password. There are failures on multiple levels and the responsibility is on the shoulders of users, website managers, business owners, bitcoin devs, etc. But really, if bitcoin were really secure from inception then we wouldn't have any of these problems. Maybe some other currency that is user friendly and secure will supplant bitcoin. It's really not that far fetched even though bitcoin has it's followers it also has pretty severe flaws.