I'm planning on doing a more in-depth write up on how NER/NLP in the tweetosphere is different that general NER/NLP which will by me technical explanation of what I did here. That should be up sometime later this week.
Can you elaborate more on how having these specific tweets helps your specific startup or how you are converting them from casual tweeters to your new users?
Right now there is a big disconnect in the post. I am guessing its because you assume the reader understands even what ner/nlp is
Check out our API for your NER needs, we cover quite a large corpus of people, places & things. Might be able to broaden your scope: https://www.repustate.com/semantic/