Anyways...

To day I wanna do a puzzle giveaway
Zen-style puzzle giveaway
you know what I mean
or not?
3:-)

First puzzle clue: It's not in the body of this post.

And by the by, this post doesn't contain a hidden giveaway.

(edit)
Second puzzle clue: It's not in the title of this post.

(edit)
Third puzzle clue: It's not in the title of this post.

(final edit)

Congrats to the winners.
This puzzle had two red fish/decoy giveaways and a "real" one.

Solution:

The last statement in the original post "And by the by, this post doesn't contain a hidden giveaway" with the rather obvious link at the end could give you an indication that there are in fact not just "a hidden giveaway" but several giveaways.

"First puzzle clue: It's not in the body of this post." is the clue for the first puzzle and refers to the title where the random number and typo should lead you to:
www.steamgifts.com/giveaway/28mAX/indie-gala-5

"Second puzzle clue: It's not in the title of this post." is the clue for the second puzzle where you can spot a link on the "." at the very end of the original message:
http://www.steamgifts.com/giveaway/a2B5n/indie-gala-5

"Third puzzle clue: It's not in the title of this post." being the same as the 2nd clue, should clue you to the fact there are in fact three puzzles. To solve the third one, you need to examine the main text. This text has 5 lines with rather obvious typos and missspellings. If you take the first letters of each line you get TZyo3 but wait, "To day" doesn't look right and of course it is not. If use the phoentical letter (or number in this case) you get:
http://www.steamgifts.com/giveaway/2Zyo3/dawn-of-war-franchise-pack