It's all done now. Thanks to everyone who participated. These all finished at various times today. Often I created them as I added their puzzles. Special extra thanks to the several people who pointed out a few mistakes I had made. :) :(
I had fun with it. I will take a bit more care setting up next time to avoid mistakes requiring edits. I'll also try to take more care with ones that may be extra difficult for people whose English is not great.

Solutions:

1. Indie Gala 2 - The Epic Gala Bundle this was the standard, first letter of each word is the giveaway address. Except I didn't realize for first couple days that was an L, not at I, hence the hint.
2. Greed Corp was a Pink BushBaby toy my daughter got at the zoo. bit.ly/pinkbushbaby Someone though they'd be funny though and make bit.ly/pinkmouse point to Number 11.
3. Toki Tori Metal Zangief, Qq, 8 (infinity on it's side)
4. Killing Floor replace the imgur.com with bit.ly
5. BioShock 2 the address to be used with bit.ly was written in the alphabet from LEGO Bionicle. Incidentally, the address was also a Steam key for Bunch of Heroes
6. Humble Indie Bundle #4 the picture was actually a JPEG with a RAR file copied inside of it. Renaming it to .rar and opening the RAR file revealed two files. One, securitybreach.txt described some kind of hacking attack, and included several codes (Steam keys for the three Hacker: Evolution games, and Critical Mass). The second file, just called hosts, had a bunch of nonsense words in it, and also included several url shortener addresses mixed in. Using the codes along with various shorteners could take you to various places, including the original thread, the public giveaway Number 11, some pastebins with random translated versions of Number 8's clue, and some other stuff. One of them took you to this image. Which happened to be a Steam key for Greed Corp, but the word GREED was the real clue. It referenced a movie, Wall Street where Michael Douglas says "greed, for lack of a better word, is good." This indicated to use the letters in the image with the url shortener is.gd
7. Humble Indie Bundle #3 was linked to from Number 6
8. Magicka following the directions as I mean them worked like this: n (from sentence) → n52 (count words from the chatlog I originally posted, including when it was part of a name) → then52what → then5what → then5what11 (at the end, not add to 5) → winthen5what11start → winthen5whaxat11start (put ax in the middle of what) → winthen5wat11start → v.gd/winthen5wat11start (very good job meaning to use v.gd
9. Steel Storm Weapon Pack DLC 4square, Ouch!, B (the third character in the case example), Isaac (The Binding of), p(ee)
10. Renegade Ops linked from Number 9 after a joke about that one being a crappy gift
11. Titan Quest Gold (DE) was a public giveaway
12. Tropico Trilogy Inside the Titan Quest giveaway I had said GLHFetcBBQ and Lollercopterwafflerofl just being silly. One commenter thanked for the giveaway and said he was going to start working on decoding those now. So I figured I should oblige. One was a bit.ly link to a pastebin of an encoded set of directions. Another was a tinyurl.com link to a pastebin with instructions, written in Scottish vernacular, for decoding the directions. It was a keyword cipher with GLHFetcBBQ as the keyword. It instructed you to look in other puzzles to find encoded words, that could then be combined to create a shortened url link to the giveaway. The words were submarine, laryngitis, aardvark, microphone. The answer was bit.ly/submarinelaryngitis
13. Hydrophobia: Prophecy this was supposed to also be found through a similar process to Number 6, but I messed up and it wasn't, so I just decided to skip it
14. Humble Introversion Bundle I intended for this one to be found inside one of the gifts, or maybe a couple, but I forgot to do it, so I just added it to the original thread near the end
15. Indie Gala 2 - The Carebear Bundle this was a bonus gift I linked to in one of my hint responses

I enjoyed doing this whole thing, and I'm planning something new for May some time. I'm off all next week though, so it'll be later on. Other gifters and/or puzzlemakers who want to participate, get in touch with me in a week or so please.

The following people found six or more giveaways, they earned a voice in the post-puzzle celebratory giveaway. Post your votes in the thread, or find me on Steam and we'll chat.

Award, Butters782, chour, juzer, Rys33, Toff

If you think I missed you, let me know

Oops! Thirteen giveaways. I'm done making them.

Anyone with SIX or more solves is invited to the after-puzzle celebratory giveaway. :D

On, like, Monday, I was thinking that I was going to get around to making a big multi-gift puzzle thread deal.
Now it's Thursday, and I worked on it for maybe half an hour.
Brought it up in chat. They didn't care.

1.

But I made a gift anyway. HERE.
HINT: My EYES are bad, what the el is wrong with me?

2.

What is this?
HINT: site/adjectivenoun

3.

A&B, Steel Wrestler
E&c, crying on the Internet
D, Have you guys tried a turn of this?
HINT: Like many puzzles, this is the giveaway code.

4. & 5.

bit.ly, Also, you're all a Bunch of Heroes!
HINT: _Yes, this is technically two clues in one. UPDATE: It's possible that the image is untranslatable. EDIT: KSI says it works. I gave a hint to him below about it._
HINT 2: I'm bad at bit.ly, think of the answer as a KEY.
HINT 3: Take into account the details of the second image.

6. + 7. & not 13.

Who remembers this picture?
HINT: The opposite of 4's punctuation. o.O

8.

˙qoɾ pooƃ ʎɹǝʌ ɐ ƃuıop ǝɹnoʎ ˙ǝuop ǝɹnoʎ puɐ sʞɔɐɥ llɐ ǝʌoɯǝɹ ˙xɐ uɐ ɥʇıʍ ʇɐɥʍ ɹnoʎ ʇılds ˙ʇɹɐʇs ǝɥʇ ʇɐ uıʍ puɐ puǝ ǝɥʇ ʇɐ ʇɹɐʇs ʇnd ˙uǝʌǝlǝ ppɐ ˙ɹǝʇɔɐɹɐɥɔ ɥʇxıs ǝɥʇ ǝʌoɯǝɹ ʍou ˙ǝɥʇ pɹoʍ ǝɥʇ ɹǝʇɟɐ puɐ ʇɐɥʍ pɹoʍ ǝɥʇ ǝɹoɟǝq ǝsǝɥʇ ǝɔɐld ˙ǝuo pǝɹ ǝɥʇ ƃuıʇunoɔ ʇou sɐpuɐd ɟo ɹǝqɯnu ǝɥʇ sǝɯıʇ sɐlɐoʞ ɟo ɹǝqɯnu ǝɥʇ ǝʞɐʇ ʍou ˙ʞɔɐq ǝɥʇ ɯoɹɟ ƃuıʇunoɔ `ǝɔuǝʇuǝs sıɥʇ ɟo pɹoʍ ɥʇɟıɟ ǝɥʇ ɟo ɹǝʇɔɐɹɐɥɔ pɹıɥʇ ǝɥʇ ǝʞɐʇ
UPDATE: _I messed this up. Fixed. Original text also works now.

9. + 10.

An easy one for you kids today! 1aBCd
_square. uch! . Frequently bound. Now I have to go _.
HINT:

11.

Even easier? LOL.

12.

This is reached from within the others. :P

14.

I welcome feedback. Thanks for playing.