When we look at the price increase it seems lots of people have stoped considering it worthless...
Price increase?
Bad timing.The biggest problem with bitcoins is the lack of a market to peg them to an internal value combined with external price volatility. Trying to use them as currency when they are experiencing such wild price swings (even increases) is near impossible. Stores won't just need real-time price adjustments to keep up with the swings, they will also need to be confident they can extract the value of the coins when needed. When you can have 20+% swings in the value of a coin that's not always going to be possible. For an end user buying a bitcoin to try to make a purchase is like buying
day-trader style stock in the morning hoping you still have the value there to buy dinner in the evening. It works out well and you can get an extra bottle of wine. It goes badly you go hungry.
For them to work they either need some stabilising factor that makes them a viable e-commerce tool or a complete parallel economy that is independent of their exchange rate with the dollar. I don't see that second happening, especially given how many people are trying to sell them as an 'investment' (more like get-rich-quick scam). The former looks equally unlikely right now.
I'm also waiting for someone to start a site helping people identify bitcoin users and cashflow. The actual anonymity is fairly weak and hugely dependent on end-point exchanges being secure. I don't see any reasons to trust such end points, or much legal remedy for data losses. Mining public data combined with one good exchange hack could expose a hell of a lot of supposedly anonymous transactions.