Maybe this could explain the odd behavior of some Twitterfountains displaying only English-text tweets. Then again, maybe not.
Twitter has finally left the old Summize architecture out to dry (it started working on the new architecture 6 months ago), and instead has built the new search on the open source Lucene platform, with some of its own enhancements that lead to:
- significantly improved garbage collection performance
- lock-free data structures and algorithms
- posting lists, that are traversable in reverse order
- efficient early query termination