I've got a list of around 30 I submit by hand, and of course the rest with
Chameleon Sub. Majority of the traffic comes from the 30 I hand submit, Hun, PK, RR, and some of the old school tgps that are still going from back in the late 90s.
I've got a couple of small TGP's myself that are on auto pilot basically with automatic script that checks recips, and wait for me to approve. Was averaging couple thousand of hits per day first part of the year.. in the last couple weeks traffic has increased from google around 15-20% more than getting on a average day earlier this year.