I only started using bitcoin a little over two months ago and I have seen and read a lot of articles on it. I would get worried when I saw articles claiming it is just a ponzi scheme or whatever. Bitcoin is now becoming popular in South Africa and recenlty one of the largest stores, Pick'n'Pay, started a trial on using bitcoin as a form of payment. I also freaked out a bit when the value decreased significantly after China banned it but now the bitcoin value is tising again and for now I am content using bitcoin.