quick humble question

If it's from the bundle then no.
The FAQ states that:

• When you submit a Humble Bundle, it is only acceptable to have an unactivated gift URL to provide to the winner. Members giving away Steam keys and the like will be warned, have their giveaways removed, and if they continue, may result in a suspension.
• These rules also apply to additional keys within the Humble Bundle. Please do not giveaway separate keys, such as SpaceChem, or create a giveaway for the leftover Desura keys. Unused URLs for the original Humble only, please.

IF they key is from the HIB then NO->FAQ.
If not from the HIB then YES.
FAQ also say not to ask for giveaways(if that's what you're trying to do)

Bolt, if you would take 5 secs to look to my account you could found i already have the Spacechem :)