Trading humble bundle keys, is it illegal? does it violate any EULA?

[Vault Boy]

I know that I can be scammed, but I am talking about EULA and legality.
I am asking because I have a few duplicates sitting there doing nothing, and I would love to trade them in exchange for some good games.

[76561198218426745]

Humble Bundle prohibits "using the Service for any commercial solicitation purposes;" and says "The Service is only for sales of products or product rights (collectively, "Products") to end user customers for their personal, non-commercial use." The usage of the word "personal" suggests they don't want you trading their keys, but I am not a lawyer.

[HEART]

How would anyone know that you traded a key?

[Vault Boy]

Originally posted by Silversun Moon 0430 🌒:

How would anyone know that you traded a key?

I would rather not risk my account, even if the chances are small.

[HEART]

A key is a key. Once entered, it is still a key.

Oh, and how would anyone know that you traded a key? Your response didn't answer that.

[MalikQayum]

legally you can freely do whatever you want with the key, be that sell or trade it, however indiegala / humblebundle etc have terms of conditions that they reserve the rights to suspend your business with them in the future if you were caught breaking their TOS/EULA but they are not above laws.

[Vault Boy]

Trading Humble keys, any problems with that?

I am reposting this thread because I wanted to make myself clearer:
I have a few games from Humble Bundle which I already have (duplicates basically), I was wondering if there is any problem in trading them in exchange for other games which I do not own right now.
As far as I know commercial use means making money out of something, I don't think that trading is considered commercial but I may be wrong.
Is it against Steam EULA? Is it against Humble's EULA? I see many people doing it, it doesn't make it right but if it is prohibited, why would they do it and risk their accounts?

[Cathulhu]

Uhm, yes. It is commercial. It may not be money you get in return, but something else with a comparable monetary value.