Hi HN. I built this (http://hashtagEvent.me) web app over the weekend, which starts to solve a problem that I'm sure many of you have too: I want a way to get calendar events from tweets. For example, if someone you follow is going to a GitHub meetup next week and they tweeted about it, I want this information displayed somewhere in an organized manner. That's what hashtagEvent.me does, it gets tweets (which for now follow a simple syntax) and creates events with the extracted dates and descriptions. In my mind that's a valid concept, but I'm slowly running out of venues where to…