I'll tell you what typically happens with stuff like this.
A promoter (whipfinishindustries, troutnut.com, and others for example) will post some very nice useful posts, pictures, videos, then ask about a site sponsorship. In the meantime, they'll continue to post video links and photo's like how to tie a worm, etc... Then I send them the sponsorship info they asked for and I never hear from them again.
I normally don't even get a "fuck you, your prices are too high"... Essentially, the asking of the sponsorship is to keep me quiet while they ponder the thought and flood the site with more "free" stuff that you can click on in order to get to their paid stuff.
and that, ladies and gentlemen is how whipfinished products will get popular (not through their hard work, but through mine and other sites like this one!). Amazing.
Personally, the only companies I sponsor are the ones with banners on this site:
Delaware River Club
Hatch
Simms
Gene and Ines shuttle service
West Branch Angler
Royal Wulff Products
RIO
SAGE
Readington
GoPRO