Absolutely right. A great many times the nomination process and general election were influenced this cycle with misinformation and deliberate distortions that were sexy headlines, but later retracted quietly. A minor example is a dust up that occurred early on which suggested that John McCain might not be eligible to run for president, since he was born in Panama during his father's Navy service. The speculation was entirely false, since under those circumstances McCain qualified as a natural born citizen. That fact was easy to establish with minimal research by media. But the story ran first, without bothering to do the homework. The same could be said of the Barack Obama "madrassa" story which did its damage with only half hearted efforts to refute it.
The Palin "Africa Story" was eagerly embraced by liberals who were delighted to hear of more evidence to support their belief that she is stupid and uneducated. Palin, for all her faults and controversial beliefs, is neither. But MSNBC was more than happy to toss some raw meat to the hooting crowds. Interesting to see the outrage of some progressives for being cast as elitists, when they're obviously so eager to dismiss politicians outside their ideology and the Washington clique as ignorant rubes.
And yes, it was a close election in the popular vote. I had predicted a 5% margin of victory. Obama won the popular vote by 7%.