I like that it is easy enough so anyone can use, but also powerful (I'm using this tool with my colleagues who are not developers).
There isn't much in terms of features or tools available yet - more would be great! If you're looking into solving problems around text classification then look at other options first because there's nothing out-of box about lighty right now which makes sense given their focus as an open source project rather than developing proprietary software/tools etc.. We've been able solve some interesting challenges by combining different sources including social media posts from our customers' websites along side traditional web analytics logs we capture ourselves via Google Analytics API calls.