Robin,
I'm from GayCrawler.com and we have partnered with Click4gay.net which is own by www.Etineria.com ...
I didn't meet guys from Spidergay.com yet but I think they are independant.
Etineria runs different click4.... they are an "asp" I'm not sure they can manage topics directories! But who knows!

When you will be ready to sign up, don't for to add the GayCrawler's promo code of $25 free click ...(promo code = 102)

Ciao