What is social media?

Here's what Wikipedia has to say about each of the social media
services used by GLPS:

What is Twitter?
Twitter is a free social networking and micro-blogging service that enables its users to send and read messages known as tweets. Tweets are text-based posts of up to 140 characters displayed on the author's profile page and delivered to the author's subscribers who are known as followers. Senders can restrict delivery to those in their circle of friends or, by default, allow open access. Users can send and receive tweets via the Twitter website, Short Message Service (SMS) or external applications. While the service costs nothing to use, accessing it through SMS may incur phone service provider fees. Follow GLPS on Twitter

 

What is Facebook?
Facebook is a social networking website that is operated and privately owned by Facebook, Inc. Users can add friends and send them messages, and update their personal profiles to notify friends about themselves. Additionally, users can join networks organized by city, workplace, school, and region. The website's name stems from the colloquial name of books given at the start of the academic year by university administrations with the intention of helping students get to know each other better. Become a fan of GLPS on Facebook

 

What is Flickr?
Flickr is an image and video hosting website, web services suite, and online community platform. In addition to being a popular website for users to share personal photographs, the service is widely used by bloggers as a photo repository. As of June 2009, it claims to host more than 3.6 billion images, up from 3 billion in November 2008. View GLPS' photo stream on Flickr

 

What is Delicious?
Delicious is a social bookmarking web service for storing, sharing, and discovering web bookmarks. The site was founded by Joshua Schachter in 2003 and acquired by Yahoo! in 2005. It has more than five million users and 150 million bookmarked URLs. GLPS bookmarks on Delicious