What is the proper etiquette on giveaway response time?

7days (at least, that's what I know)

Please check the beautiful FAQ for information about response time for GAs :)

If I win a gift, when can I expect to receive it?

Giveaway creators are allowed one week to send the gift after the giveaway has ended. Depending on the type of gift and the giveaway creator, you might receive the gift to the e-mail address you have listed on the account page, a key might be added beside the gift you won, or the giveaway creator might have sent you a friend request on Steam to make the exchange. Please remain patient, and do not contact the giveaway creator during this time. If the gift is not received after one week, you can mark the gift as not received, and attempt to contact the giveaway creator on Steam to follow-up.

The winner has not redeemed my gift, and I'm unable to get into contact with them. How do I proceed?

If you've been unable to reach the winner of your giveaway using e-mail and Steam after seven days of your giveaway ending, and they have not yet activated or redeemed any keys or gifts you attempted to send, please contact support to request a new winner. When creating a ticket, we ask you to include data that suggests you made an adequate attempt to contact the winner, such as screenshots of e-mails, friend requests, or gifts pending on Steam. If the request is approved, a new winner will be generated by the site.

The winner has redeemed my gift, but not marked it received. How do I proceed?

If your gift has been activated or redeemed by the winner, and they have not left feedback after seven days, please create a support ticket to request received feedback. A support member will review and ticket, and if the gift is activated on the winner's Steam account, approve the ticket and update the feedback to received.

You came to RPGM forum, didn't read FAQ and started asking questions most of which were answered in the FAQ.

Now you came to SG and did the same mistake.

Why do you hate FAQ's so much that you always avoid reading them?