Mathblogging.org has collected over 700 blogs and other news sources focusing on mathematics all in one place. The goal of Mathblogging.org is to be the best place to discover mathematical writing on the web.
Sources are categorized according to a list of topics. You can see the specific topics a writer has chosen by clicking on the bubble next to each post. You can then click on those topics to find other posts on the same topic. Users can recommend posts and comment on them.
You can search Mathblogging.org using keywords, and you can create a custom feed to follow using an RSS feedreader. Use the Mathblogging.org Widget to place that feed on your own site.
Mathblogging.org has four Twitter feeds you can follow: Editors' Picks, Recent Posts, Notes, and the official Mathblogging.org Twitter account. You can also Like their Facebook page, or follow updates on Google+.
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