I'm not entirely convinced that this is going to make a lot of money for Canonical. It will be interesting to see figures in a couple of releases if Canonical (which is a private company) decide to tell us.

What do we think the value to Amazon is of my random desktop searches for files & stuff on my desktop?

The 'slow typing' problem is real: search is dynamic and can, as a result of network latency and fat fingering show results of unfortunately shortened search terms. There is no content filtering on the results. That is actually why I switched it off.