Is there any way to trade weapons, warframes, blueprints, or materials in warframe? There isn't a page for it in my steam inventory, but I figured that that might just be because it can also be played without downloading it through steam (by downloading through the original developer's site instead). Is there in fact a way to do it in-game, or am I forced to sell my gear that I don't want, even if a friend needs it?
Warframe does not currently feature a trading system. The developers have stated on multiple live streams that they are planning on doing a limited trading system later on which would not involve direct trading of warframes, mods or materials. I have not seen or heard anything solid on it as of yet.