Hello, You can find related tags, words, users, links and sites from a recommendation and reputation tool I am building called TagWalk, http://tagwalk.com/
For example, tags related to #rest are #json #sap #php #xml #Java #API #nosql + more. Take a look: http://tagwalk.com/tag/rest This is based on a sample of messages updated at least once or twice daily. Hope this helps, Tim Hastings http://twitter.com/timhastings