Tags are great, but often a particular word will be too specific to have a tag devoted to it, whereas you'll want people to be able to find the word on searching the site. If the word is English, no problem: people can search the site for it. If it's transliterated, though, then people searching might not choose the right transliteration scheme in constructing their search, and unless the site gets a Soundex-like system in place for searches, they won't find what they want.
One solution is to decide on a standard transliteration scheme to use site-wide. This was suggested by AviD in a comment at "What is the common way to type in Hebrew for this site?". However, I doubt that that's going to happen (as I mentioned there). Let's assume, for the sake of this question, that it's not going to happen.
What are other ways to make sure transliterated words can be found?