I was invited by a friend of a friend to invest in Bitcoin last year. He told me that if I invest 5000 in our currency it will be doubled in a month's time. He also promised me that I will get referral fees and override from every person I introduced to Bitcoin and that prices of Bitcoin are expected to increase. To make the story short I did not join because I believe its a pyramiding scam. Truth to be told I did my research on Bitcoin after that and it turn's out that Bitcoin's price was really on rise unfortunately I did not invest at that time. Currently I'm learning more thru this forum and I thank my friend for inviting me here. Just last December I heard from one of my friends that the company they joined was in fact a pyramiding scam and the money they invested in just vanished out of thin air together with the people who invited them. We should be wary of people offering investments and opportunities to us. Do your research. Opportunity comes with risks as well as the rewards. If its too good to be true, it might be a scam. Bitcoin is not a SCAM but there are people who uses Bitcoin to SCAM other people. Good luck to us and more power to Bitcoin!
You can never promise people the things that are not depending on you like the Bitcoin price movement or something similar to that, so it doesn't mean that bitcoin is a scam it just mean that you or your friend is promising the thing that they cannot accomplish and it's your fault.