Facebook is planning to roll out inbox search this month. Users will be able to query their friends' names or keywords. The search system was built in-house and has already been tested by some users.

Writing on the Facebook blog, engineer Prashant Malik said the search will be rolled out to select networks this week, but everyone will soon have access to the new feature. Malik also said inbox search has been requested for a long time, but they wanted to make sure they had a solid product that could scale, something that Twitter has been struggling with lately. I'm thinking that having a bunch of ex-Googlers on staff helped the effort finally get completed.

Still, many users would probably prefer that Facebook's security issues are fixed before new features and updated designs are rolled out.