Ask HN: How to get User's info based on their Twitter Id?

I posted this question earlier but looks like it was not the right time to post and unfortunately didn't get enough responses as I was expecting. So wanted to give it one more shot.<p>So, the issue is, I want to get user's info based on his Twitter Id, like.. GitHub, LinkedIn, StackOverflow, Facebook, Flickr, HackerNews, etc.<p>I looked at Rapleaf but it needs User's email address which I don't have since Twitter doesn't return that info.<p>Rapportive is doing good job but not sure what service they are using. Also they use user's email address to get more info.<p>Any help would be really appreciated.<p>Thanks :)