Even tho your idea isn't bad, following and using #hashtags is way more important in my opinion and might have a way better/interesting result.
The tool #hashtag has been destroyed but actually it works against "follow me follow you", idolatry, narrowing the input of your mind because you only are exposed to what your peers are exposed.
The tw and fb world is a world of "influencers". You really just want to recreate that out here?
why?