Written by Smokey Ardisson at CaminoPlanet.org:

The larger problem, though, is that Flash breaks the web and defies established conventions that make the web usable. There are no hyperlinks per se (only clickable spots), no way to determine where clicking will take you, and no way to get back there (that is, no URIs or URLs). Even worse—and one of the reasons Flash is so beloved by certain types of content creators—Flash is a black hole; nothing comes out, which makes Flash entirely inaccessible for reuse, collaboration, or whatever the next great idea on the web is.

File that under "Well said".