There are not many sites dedicated to this hobby around anymore, however the ones that are, are simply amazing:
Bigheads.info
The ultimate site for collectors of football figures. A definitive almanac/catalog of all mass-produced figures released since 1970, including pictures. A great help for all collectors out there. Most of the images shown on my front page have been taken from there.
Corinthian Archive & SoccerStarz Archive
All you need to know about Corinthian and SoccerStarz. By Corinthian expert and great friend Craig Robinson, one of the biggest collectors in the world.
Facebook Group
Facebook community dedicated to the hobby of collecting football figures.