Random key

+1

+1

Nice, I didn't know that! Thanks, kind stranger!

Thanks! I tried it with another key (got it in a trade but got an error message for already activated) and wanted to check if it was for the right game at least, but there I also only get the "The product code you've entered has already been activated by a different Steam account. This code cannot be used again...."
I might be blind, but where should it tell me for which game it was?
Sorry for a bit of off-topic, but I just read it and I've been thinking about how to handle it :)

That's only partly correct. In my experience:

If you own the game -> it will tell you what game it is, regardless of key status
If you don't own the game:

• If the key is valid and unused, it will activate the key and tell you what game it is
• Otherwise, you only get the generic error and are not told what game it is

that's what I do as well, since I don't like extensions for browsers very much