jamsiejay its all about promoting. For example when you signed up for the randomizers you signed up under somebody and that somebody got paid. See? it worked for him/her! So you really cant say randomizers is a waste of money.
I hate to say "never" but I would never promote a hyip because most of them are scams. But randomizers is just a webpage that you promote to convince people to give you money.
Do not ever believe that they will advertise for you, youll have to do most if not all the advertising and promoting.
The randomizer that you need to try is http://www.dollarrandomizer.com/?daypal
If you dont have it, get it and promote it