Services that provide hosting of Mercurial repositories.
Here are some places that provide free Mercurial hosting:
Bitbucket Github-like hosting service for Mercurial. Includes bug tracker and wiki. Paid plans also available.
Codebase - Offers a free plan for small sized Repositories (Mercurial, Git and Subversion). Polished web interface. SSH and HTTP.
Google Code Supports svn and hg.
Kiln provides Mercurial hosting, code review, and bug tracking, and is free for up two developers.
Mozdev provides free project hosting for Mozilla applications and extensions.
Project Kenai An integrated suite of collaboration services for developers to freely host their open source projects and code.
ShareSource.org - A Sourceforge-like server for hosting projects. Supports Mercurial out of the box
SSHControl.com - Hosting for Mercurial, Git, and Subversion over SSH. Free hosting for small projects, two paid levels at $4.75/mo and $9.75/mo.
TuxFamily.org - Free hosting for free projects. Provides Mercurial, Git or Subversion repositories.
RepositoryHosting provides Mercurial/Git/SVN hosting with Trac.
SourceRepo provides Mercurial/Git/SVN hosting with Trac/Redmine project tracking.
XP-Dev.com provides Mercurial hosting, project tracking and integration with various other project/issue tracking tools.
Versionshelf provides Mercurial and SVN hosting and integration with various other services.
PublishingRepositories for setting up your own Mercurial servers