I'm getting a bit scared actually. While I'm happy to see my initial investment from a month ago increase so much in value, I can't help but think that this is a bubble, given just how quickly it's more than doubled in price. Ah well, in the end I suppose I didn't buy them as a get-rich-quick scheme so it's not really all that important. Just would be a shame to have to say "I should have sold when they were worth something."
People have been saying bubble back since a bitcoin was worth a penny. If the community and user base keeps growing, this surely isn't a bubble.
If everyone loses interest, you can be sure that values would decline.
Like I said, I'm only concerned because of the sheer speed that it's been rising lately. If the user base is truly expanding at the same rate, then all is well and my concerns are unfounded.