I've noticed that the torquebox documentation's SEO needs a bit of work. SEO can get incredibly deep, but I think that having the following three things hold true would fulfill the 80% case for documentation searching.
1. Searching for "torquebox documentation" should always prioritize links to the docs for the latest GA version of TB.
2. Searching for component specific documentation ("torquebox messaging documentation") should always prioritize links to the specific component docs for the latest GA version of TB.
3. Searching for a specific version ("torquebox 2.x documentation") should prioritize links to the latest docs for that major version of TB.