So pretty much Zynga is getting some [censored] Facebook users to spam votes for them? Well, I won't mind as long as they get beaten by an actually good developer.
It's not really surprising, is it?
I'm sure everyone would agree that this isn't in any way a competition about which game developer is the best, but rather which can rack up the largest number of votes. If we really wanted to know which developer was best, we'd have a panel of qualified, independant, judges to weigh the pro's and con's according to preset standards, or at least a set number of voters chosen to be representative of the general population.
What we have now is an undetermined number of voters without any kind of selection at all. Add to that the fact that gaming enthusiast are very few in the grand scheme of things, and we have a competition that says absolutely nothing relevant about anything at all.
Ask a random person on the street who Relic are, and you'll most likely get an answer along the line of "Who?", or perhaps "Isn't that an adventure series on CBS?". Same for Bethesda, Epic, Obsidian, Bioware. People might have heard of Blizzard, but beyond the three letters "WoW", they won't have a clue what they're about.
So, what do you, as a developer, want to do to win?
Why, of course, you want to mobilize the broad majority of people; the one's who do not spend their free time arguing on internet forums. How do you do that? Make a mention of it in Farmville, because everyone and his mother plays it, literally. Just like Facebook itself, it's viral.
The general public doesn't know about their design philosophies, about how they cater to the demands of their customers, or for that matter how they treat their employees. The general public will, in general, go like "Oh, I play this, so I'll vote for whoever made it!".
That's just how things work; if there is a niche-market, whoever is the first one to pull it into the mainstream will get the big bucks, and the people in the niche will be upset because the broad majority suddenly became interested in what used to be their own domain.
It's not wrong, bad or unjust, it's just the way it is.