@thor
Autosuggest is far different than what you're suggesting, of highlighting every word in a post that could be marked as a hashtag.

Autosuggest works as a search function, that helps you find the correct tag when you're trying to hashtag something.

What you're describing is for pestering the user to hashtag something even when maybe they weren't thinking about doing it initially. The addictive element comes from punishing users by annoying them when they don't # a word; and then receiving or being promised to receive incentives for hashtagging every word.