does greenman gaming sponsor this site?

Not sponsored.
SG just uses sites so people can find deals.
cg said he was considering talking to GMG to see if we can get some exclusive SG coupon, but this was months back.

if you want a free website and most of us do i imagine then ad's are gonna be on it, theyre not offensive nor do they involve trickery so for me theyre a part of using the site, gala giveways old site is a lesson in how not to do it the ad's their were horrible up until the revamp recently

They're affiliate banners, nothing else.

I see other ads too

Yes, it was all an elaborate ruse.

Me too always see GMG ad. Maybe it's because of your region.

currently seeing a cyberport add

if you are talking about the stuff at the bottom of the page, I see Gamersgate deals too not just GMG.

Affiliate banners,SG would get % of money from sales if ppl came/clicked that link and bought a game ect

I see tea ads...

Pretty sure it goes by internet history but I could be wrong...at least for me, I get GMG ones once in a while also but I also visit that site often.

Sort of, yes, in that anyone who buys banner ads here is sponsoring the site by definition, and links to it earn affiliate cash just like anywhere else.