I agree. Not that you need the "thanks" for dropping the code (although it doesn't hurt), but its inconsiderate to leave other people hanging (and potentially VERY wishful and excited) when they see a code and believe they have a chance at getting it.
Example: When I see Steam codes, I fire up...
Won a copy of Darksiders, thanks for sharing the link!
To the above posters having problems, I was having issues earlier as well, but I just tried again and redeemed it without any problems. Afterward, I took my CD-Key to Steam and added it there too.
Thanks again!