Millions will be hitting the polls in the US today. Many will be spreading the word on the social web. It’s never been easier. Here are a few ways you can share your vote.

Get started with Google
Before you can spread the word you have to vote. Need help learning how and where? Google makes it easy by including a polling place finder in certain search results that links to a customized page powered by their Election Center.

Shout it out on Foursquare
Foursquare has been busy adding many polling places as venues and including them in as special category that shows up in your nearby places view. They are tracking check-ins in real-time nationwide at their shiny new site elections.foursquare.com.

Of course they are also offering a limited edition badge. Just check in with #ivoted  in the shout out to get yours.

Declare your vote on Facebook
Your Facebook home page includes a widget that lets you share your vote and has a running total of how many other users, including your friends, have voted.

Facebook also has an official U.S. polictics app that includes a polling place finder and will stream live video coverage starting later this afternoon.

Pimp out your profile with “I voted” avatar images
You can spread the word (and pile on the peer pressure) to all the social networks you belong to by changing your avatar photo. I’ve created some options below. They’re free for personal use. Click on each for a  larger version. Right-click (PC) or control-click (Mac) to grab the image.

Have you come across any other fun or creative ways to share your vote online?

Yahoo – Added a vote button and turned theirs into a poll.

Cafemom – had a nice button standing in for their O.

Boston.com – also choose a Vote button.

FriendFeed – went with a sticker instead.

Google – outdid themselves with voting booths.

I also came across this version at googlevote.com, but there isn’t anything else at that domain. Not sure what the story is there.

AOL – had a spiffy, but lengthy, animated version of their logo.

Ask.com – had a dramatic White House and sticker

Surprisingly, my favorite was Microsoft’s Live Search (click the image to enlarge). I love the power of the photo background.

When I saw this tweet last night, after chuckling at the HTML joke, I started thinking about all the folks who’d be stocking up on paper copies of newspapers today. That lead to some surfing of major news sites and, ultimately, to the collection below of post-election screenshots from around the web. Thanks to Kristofer Layon for the inspiration.

What did you do to commemorate this historic event?

The most important thing you can do today is get out and vote. Google can help you find your polling place. Starbucks will even give you a free cup of coffee. Follow the action at Twitter Vote Report. All that’s left is for you to go and make the world a better place.