Humble bundle question.

you have to beat it

I think meeting it works for initial purchase, but if you are increasing your contribution then you need to beat it.

Well, BTA is 'beat the average', not 'match the average' xD

Also matching it won't increase it, so it will be pointless.

You can simply go to HB and press buy then enter the exact average amount, you'll see that it warns you that you won't get BTA games.

Thanks for the answers guys. One more question. If I send someone a gift link, when they redeem it, will it automatically go into their library or will it become an item in their inventory?

I recommend beating it by a few cents, the price can change during checkout I believe.