Maybe it is a HYIP maybe it's Arbitrage. That is what we'r trying to find out here.
BTC Arbs IS a High Yield Investment Program no matter what you think of it - you are promised a LOT of interest for what you put in. HYIPs can be legit. What we're talking about is if BTC Arbs really does arbitrage to get profits or is just a ponzi.
This is really a small technicality, but I thought I'd point it out.
If the word HYIP is being used, it is not legitimate. There can be many ways they generate more funds other than just bringing in funds, but it is definitely not BTC arbitrage. More than likely its a feeder program (a short term high yield program that scams that an admin launches to help keep his main program alive longer to bring in more deposits). The BTC arbitrage is a simply ploy to bring in clients from the Bitcoin community and take advantage of them, nothing more.