Facebook gives people a platform to share information in an easy and entertaining way. Find friends, stay in tough and share what you are doing. To build a fan base or promote something on Facebook, you can set up a Page.

Twitter is a micro blogging tool where users opt-in to receive and send extremely brief content or tweets with others. Basically, it’s a way to share thoughts and ideas in 140 characters or less.

Foursquare is a location based social network where you “check in” to your favorite locations and let your friends know where you are. Foursquare has deeper purposes than just location sharing with friends, though. Many restaurants and stores will reward loyalty and frequent check ins with specials and deals.

Google+ users post images, links, videos, or text statuses, and followers can award those posts a +1, leave a comment, or share the post with their own followers. You can also mention someone in your post by typing the + or @ sign followed by their name.

QR Codes or Quick – Response codes, are easily readable barcodes that when scanned with a QR decoder (usually available on smart phones) can translate the code into a URL, a telephone number, a bit of text, or other data.