Greetings Tengu! I'm sure that you'll be able to learn and help from D3scene users and pros ^^
You can offer your services here, trade your programs in case you're selling them here and request a middleman for your sales security here. If you're offering free products/Keys/whatever you can post here what kind of things you're giving away.
At last, I don't know if that's what you do, but there's a whole forum about software/hardware and things.
I suggest that you check 'em all and see what's the best for you, have fun and feel free to PM me if you need any assistance