Election Day 2014

I'll start this by saying that I'm not american and that I don't know how specifits work there... hell not even here, but I've always been curious about this thing my grandpa and I read when I was still in school.

It was an article, right before presidential elections here in Colombia, and it talked about blank/protest vote, what it's supposed to mean and how we don't use it despite knowing and constantly complaining about how shi'ty our politicians are. It's always one candidate vs another candidate, even if we have more than just 2 parties, in the end the focus goes to just 2 of them. But it doesn't matter, everyone is pure shi't. Always. We could have 100 candidates and they would all suck. All of them. So why vote for one of them? Why go for "I'm voting for the lesser shi't" or similar? In the end, you're being just as useless as them. The article ended by saying that if the majority was blank votes, despite having a shi't elected, it would send a message, unlike not voting.

Now, I'm not really invested in american politics, I only have so much patience to deal with extra retardedness politicians pull in a different country but some posts here feel the same. It reminds me of that South Park episode where Stan is forced to either vote for one of two shi'ts or abstinence, and he's not even given the option of blank vote, is it just not a thing there? Or has it lost its meaning like it did here in Colombia? To me not voting can mean anything from too lazy, doesn't care, clueless, whatever while the other means that you're pointing out how dissatisfied you're with available candidates.

In the US it would either a) not be reported that there were a substantial amount of blank votes or b) produce no substantial change anyways. It might convey a message, but that probably wouldn't produce change anyways.