Social
Computing Data Repository hosts data from a collection of many
different social media sites, most of which have blogging capacity. Some
of the prominent social media sites included in this repository are
BlogCatalog, Twitter, MyBlogLog, Digg, StumbleUpon, del.icio.us,
MySpace, LiveJournal, The Unofficial Apple Weblog (TUAW), Reddit, etc.
The repository contains various facets of blog data including blog site
metadata like, user defined tags, predefined categories, blog site
description; blog post level metadata like, user defined tags, date and
time of posting; blog posts; blog post mood (which is defined as the
blogger's emotions when (s)he wrote the blog post); blogger name; blog
post comments; and blogger social network.