not all are scam.. some are really paying.. remember that HYIP wont last forever. the advice is dont invest the ammount that you cant afford to loose.
I just want to ask how much time did you spend researching the HYIP you invested in? I know, it was only a dollar and a test and not worth the time to do proper research so it's no wonder you lost your dollar. I recommend you take another dollar, but this time do some research and I'll bet you will fair better.
When I first invested in HYIPs, I lost everything too (I didn't invest much when ), but now, only 12DailyPro is paying me few thousands a months.. So think again.