You should try providing this service to the new York times or something like that to do sentiment analysis on their articles. Something very ambitious you could do is to do sentiment analysis on say the 100 most read news sites in the country, to see how the general American population feels about various subjects. Could help out politicians, think tanks.
Thanks for the response. Existing apps make you find services such as venue by yourself. Some of them allow you to send invites but most are not comprehensive. I think a platform where you can find and connect to services would take a lot of the stress out of event planning.
It would be probably be a free app if you're an individual creating only a few events a year. It could charge event planning companies, and it could charge service providers such as venues to be promoted on search results.
Data I am getting from the Google Places Javascript API, which I believe is free unless I charge people to use my service. Google API can be annoying at times, and I may check out Locu's API.
Thanks for the idea. It fills a niche but it might be a little too simple. Worth considering though