You win if we win

I'm confused as to why this is such a big deal that a) Nexon is bribing, and b) the Warframe (and, to an extent, the indie MMO community (which exists?)) community are getting their panties wet.

Because they're idiots. No other reason.

In my opinion, its because bribing is taking away from the integrity of the contest. It's encouraging people not to vote based upon their true opinions of the two games presented, but rather because one game or the other is offering them free stuff to click a button. I could potentially play both games in my spare time and prefer game A to game B, but if game B is going to give me double experience to vote for them, I'm more inclined to vote for game B if I have any desire to play that game at all, even if I do slightly prefer the other one. This effectively invalidates the results of the poll (as far as "what is your favorite game" is concerned), and makes the whole thing rather meaningless.

Just my two cents.

o.o ignoring the fact that your answer is irrelevant to what Jedward asked...
No. The site with the poll actually contacts developers and people for them to get their players involved however they can, they don't care about "the integrity of the contest" because it's irrelevant. The poll was already meaningless.