So, you can join NeoBux which is ranked 54 alexa and it is great site, or you can chose Clixsense also a great site, but getting direct referrals is so so hard. You will need to invest in advertisment so i suggest you go different way.
Let me explain.
It is all Math.
You choose Noulix which has 120 000+ members,
or Zapbux which has 20 000+ members
or DrClix which has 15 000+ members.
So it is easier to get referrals for the site that has this members, then for the sites like NeoBux or Clixsense which has millions.
Then you choose several traffic providers like EasyHits4U or AdhitProfits and they offer you as a free member 1:1 or 1:2 traffic.
I have chosen all 5 PTC sites because i m advertise on NeoBux and Clixsense, and get my traffic on EasyHits4U and AdhitProfits, but i m making money on