Few days back somebody was asking for some embeddable bitcoin charts (or so I dreamed, I can't seem to find the thread), so I've made a little something on bitcoinity.
Details here:
http://bitcoinity.org/markets/webmastersIt looks something like this:

I'm happy to implement any interesting ideas and improvements. If you have bigger website and you want to make sure nothing will change after including it, I suggest waiting few days since I just wrote it.
Currently it's based on mtgox, I can make exchange param or maybe display something weighted.
PS. Due to health problems I may be responding very slowly, but I read all feedback carefully.
You can see that the price of bitcoin has been steadily rising, partly due to the fact that altcoin is being poured into bitcoin and causing the price of bitcoin to recover very strongly. Currently, bitcoin is adjusting at $ 8200 and is still on the uptrend, so I think that at this point you can continue to buy bitcoin and bitcoin in the medium term can return to the 10000 $ level.