Hungarian Reference.com has been a real boon in helping me re-remember what fine points I had forgotten in the past few years. It isn't perfect either, or even complete, what with some pages that just say, "I have yet to write this page."
Sometimes, when composing a language text, it's too easy to include vocabulary words that help illustrate the grammatical points in a chapter, rather than choosing words that might actually be useful. As I ran into that particular wall, I got inspired to put together a list of 100 or so words that are really helpful to know for travelers who don't care to learn those fine points of grammar. That will be up soon. (UPDATE 26 October: It's up!)