There are a growing number of philosophy blogs online, below is a list of some of the most popular, as well as those which I read regularly.

Philosophers' Carnival - fortnightly philosophy blog carnival

Individual Philosophers

The Leiter Reports - Political and legal philosopher Brian Leiter's influential blog on academia and philosophy related matters.

The Brooks Blog - Newcastle-based political philosopher Thom Brooks' popular blog on academia, political philosophy, and British and American politics.

Virtual Philosopher - Open University philosopher Nigel Warburton's blog featuring his philsophy and ethics bites podcast series, amongst other things.

Philosophers Anonymous - Anonymous academic philosopher writing on academic, political theory and current affairs.

Group Blogs

PEA Soup - Covers issues in ethics, moral philosophy, and academia.

Public Reason - Focuses on political philosophy, and hosts an online podcast symposium.

Ethics Etc. - Covers contemporary issues in ethics and related areas, and hosts occasional online reading groups.

Crooked Timber - Wide-ranging blog covering academic politics and philosophy as well as current affairs.

Philosophy Job Market Blog - Popular anonymous blog about trying to find a job in a philosophy department.

Friends' Blogs

Snow is White - former Sheffield student (now at St Andrews), Tom Hodgson's blog, focusing mainly on the philosophy of language.

Struggling to Philosophize - fellow Sheffield postgrad Aaron Bogart's blog on philosophy and American politics.

Grundlegung - fellow Sheffield postgrad Tom O'Shea's blog on his research interests of normativity and autonomy, amongst other things.