> What do these sites have in common that this taxonomy usefully identifies? Forms with input fields? Yes, that's what the article says, almost verbatim. The i

> What do these sites have in common that this taxonomy usefully identifies? Forms with input fields? Yes, that's what the article says, almost verbatim. The idea of the category is to identify sites that need to interact with a server to be useful, but do not need rich dynamic client-side interaction. The editing part of Wikipedia would be "transactional" under this definition, because (last I looked) the way you edit Wikipedia is by typing your changes into a textbox and clicking Submit. It's not a Google Docs kind of situation where all the editors can see each other's cursors move around and type stuff in real time.