Planet Wikimedia is a blog aggregation feed that updates hourly.
The Planet Wikimedia is a weblog aggregator operated by the Wikimedia Foundation, to bring together on-topic posts about Wikimedia projects, other wiki sites, the free culture movement, the "wisdom of crowds", etc. -- all from Wikimedia community members. Bloggers may "opt-in" to the blog aggregator, upon review and continued approval from the Wikimedia Meta community.
RSS blog feeds present a convenient, efficient way for Internet denizens to keep informed about a thematic category, in a "one-stop-shopping" sort of way. The Planet Wikimedia seeks to keep users apprised of what Wikimedia-related bloggers are communicating currently. Just as a "news clipping" service might keep an enterprise informed about what the outside media world is saying about them, this service will keep those interested in Wikimedia informed about what the outside blogger world is saying about Wikimedia and related endeavors.
Items desired 
- Technical items - New ideas related to the MediaWiki software, opinions and suggestions relating to current technical implementations on local projects, the software itself, and Wikimedia.
- Constructive criticism - Thoughtful analysis of things that are "wrong" about Wikimedia, and suggestions for improvement.
- Praise - Feel-good or human interest stories about "success" around Wikimedia.
Things to avoid 
- Violating the copyrights of others, for example, reproducing something on your blog without permission.
- Frequent offtopic posts.