I actually get a ton of value out of Twitter both personally and professionally (it's a question of who you choose to follow). However, what your expectations

I actually get a ton of value out of Twitter both personally and professionally (it's a question of who you choose to follow). However, what your expectations from Twitter are shouldn't be the same as your expectations from a blog. It's great for finding out about events or what might be happening at an event, about getting instant feedback on something (your example, although it can extend beyond a product), and finding material that other smart people find. But if you want to understand and hear someone's thoughts or wisdom, it's not the right venue, and that's what some people are finding out.