I am not a fan of the lending type sites. However in saying that...

I am not a fan of the lending type sites. However in saying that I tried out Bitconnect and put in $200. I managed to successfully pull out $200 of interest in the first 100 days, and now am letting it roll over each day. I think sites like these last until new people (and new funds) stop coming in. Until then they seem to work, based on peoples comments etc.

When they do collapse though, it gives the crypto community a bad name and makes the whole community look like a sham.