I pity startups doing pitches in this space any more. There are simply too many of them doing the same things so it must be murder to speak to what you are doing and claim your are, in fact, "different". Most of the obvious and doable apps have been flogged past the dead horse stage at this point. Silicon valley kind of needs a new rule, until you come up with an innovative and original idea maybe you shouldn't do a startup.
Doing a hundred permutations on the same ideas and hoping that either superior execution, a competitor buyout to get rid of you or a lucky streak of virility leads you to the promised land doesn't seem like the greatest strategy any more.
I guess its still OK for the VC's like Y Combinator, as long as they have the patience to sift through them all, because the more pitches there are the more chances there are to find the ones that are unique, interesting or promise exceptional execution.
The problem with web and smart phone apps is the barrier to entry is too low so everyone is doing them.