Webmaster Tools vs Affiliate sites.

Everytime I turn around, I am seeing posts like "If you have an affiliate site, then
dont signup for webmaster tools" as they go on to say that google knows that
you are an affiliate, bla, bla, bla...Everytime I see such posts, then I just laugh...
Do you think just because you dont use WMT then google is blind to your website?

Google already knows your sites, webmaster tools just brings the numbers
to the surface so you can see things more clearly. Google knows what your site
is about...

Webmaster Tools vs Affiliate sites.

Poster :