2 questions about GA

1. yes, you should have. you can also check sgtools.info to see if the winner has broken any rules
2. you decide. If the winner doesn't want to get it through chat, then ask the winner to agree to a reroll

1. Yes.
2. Not sure, but you can deliver a HB gift link through SG as well. I'm not sure why someone would be opposed to Steam chat delivery.

1. only if it's in library.
2. the creator has the choice (mail, link, key, gift)

w/r/t your second question; I always add my winners and give them the gift links or keys during chat. That's something I state in my GA descriptions right away... and luckily I haven't had problems since.

For the second question, maybe the person is like me and generally prefer not to add people on steam unnecessarily. Especially as SG allows entering Humble Bundle gift links as keys. That said, as the saying goes, winners of giveaways can't be choosers.

1. In library or owns part of pack = reroll; Doesn't accept after 1 week = reroll; Non activated wins = reroll (if they weren't already suspended)

2. Creator.

So, let me repeat :))\

1. only if it's in library.
2. we have the answer from mods here and here

Wow, Yoshi is already so popular, I'm seeing you everywhere~

And I guess my answer is not needed, since a lot of users already did.

@1. What you meant is game was in person library ;) In this case you always should request a reroll. You basically got scammed of this game, sorry :< On the other hand - if game is in inventory as a gift you should gift it. Remember - you cannot know what purpose of this gift is. A lot of users (including me ;P) create GAs for the games they want. I have gifts in myinventory for the games I would like to own myself but I as many other contributors prioritize gifting over my own library. The fact that someone is Giving Away or is going to Give Away XYZ in the future does not mean he don't want to win XYZ as well ;)

@2 - Not your problem. If the winner has a problem with you adding him/her and accepting gift this way - he may choose not to and let you reroll. It's your gift, it's you who paid money for it, it's you who decide how and when it's gonna be delivered (as long as it fits the site's rules). Even more - if you wish to deliver key via chat and winner refuses it may be base for reroll request (winner refuse gift / cannot contact winner)

i skipped the whole reading but he might be afraid that there is some spam bot in chat, in which you could also just send the link through his email adress.

1. Contact the person and ask if they have activated the key or traded it. Tell them you are asking for a re-roll. The new winner should activate the game. If it doesn't activate have the GA deleted. Then you can blacklist the first winner.
2. If they don't want to be chatted with they shouldn't enter. Just blacklist them so you don't have the hassle with them again in future.

Edit: Did the first winner confirm receiving it?