http://www.mongodb.org/display/DOCS/Your+Go-to+Resource+for+Running+a+MongoD...
There were people from 30 countries at the Berlin hackathon this year. It'd be cool if, by this time next year, there were 30 get-togethers to help MediaWiki administrators swap tips and talk about what's happening in MediaWiki development.
You can do it. You can do a case study of "ways to improve your MediaWiki installation" at your local system administrators' or PHP meetup. You can look for interested techies near you who want a "helpathon." We can help.