Why aren't the resources tagged "ruby on rails" also tagged "rails" and "RoR"? People will try searches on various tags, not just the first tag you thought of. Maybe you allow users to tag the content, but maybe I arrive at the site just wanting to search and find what I searched for.
Maybe an implementation of an underlying thesaurus could solve this? It might however be hard to maintain it. Any other ideas for how to solve this problem?
Just to state here a metric for what the end goal is, whatever method is used would ideally provide the same or a pretty similar hit list for any searches for different synonyms with the same meaning.
On SO "ror" and "rails" are synonyms for "ruby on rails"
I feel it somewhat makes it harder to find things that way because it fragments things too much. It is tricky for some things, but it's kind of like stack overflow.. 90% of the time you're right. For the remaining 10% you can use the regular text search vs tag search.