Why are people saying this is a scam or a ponzi? I haven't checked your site to see what you are doing and what you offer as a service, This is just a hiring job here, So I'd like to ask, What do you need from a person exactly, Like do you need us to bring you more buyers if you are selling something or you just need us to post for you and promote your business just like any other signature campaign?
Then you should check their website first, before apply or ask anything, they not selling anything.
"Why are people saying this is a scam or a ponzi?"
There at least 3 factors:
1) Too high %, around 25.6% / year.
2) No information about their organization or what they do. Yes, there button "About Us" but it's not even clickable, just simulation.
3) From their ToS : "8.1. Under no circumstances, including negligence, shall Kikbtc be liable for any special, incidental, direct, indirect or consequential damages whatsoever (including, without limitation, damages for loss of business profits, business interruption, loss of business information, or any other pecuniary loss) arising out of the use (or misuse) of the Service even if Kikbtc had prior knowledge of the possibility of such damages. "