[obiefernandez]

It really depends on the type of functionality that you're talking about. So many web apps (at least the kind that I seem to work on the most) just consist of data storage and fancy presentation on the screen. Not much worth testing there, especially when the testing frameworks are immature and have the possibility of sucking you into time-consuming, head-scratching, yak-shaving hours of debugging and figuring out what is wrong with your TESTS. Been there, done that... my views on testing are much more pragmatic than they were in the past.