This MediaWiki thing could be the way to go when it comes to communicating in a pseudo-structured endless manner. You might want to have a look at the Wikipedia (an open-content encyclopedia in many languages), Wiktionary (a collaborative project to produce a free multilingual dictionary in every language) or Wikiquote (a free online compendium of quotations in every language) and more for a quick(?) glimpse into the endless possibilities of this intertwined medium. Pretty amazing stuff, that's for sure.