I'm disinclined to support even an ex- plagiarist and app fraudster. Besides, Dash requires me to go to a separate app to look up docs, it's much better to have them integrated into one's editor.
I'll leave the dev's reputation aside as it's already being discussed elsewhere. That said, I think Dash is great. I can pop it up with a global keystroke, not just inside my editor, and I use that a feature lot. It also integrates with just about every editor so that you can open docs from inside those editors with a keystroke.
I very much love having Dash open on my small laptop screen, with Emacs open and filled with code on the much larger external monitor.
Dude, you paranoid? I'm not Kapeli. I like Dash. As I've said elsewhere, the stories that came out made him sound shifty.
We have reason to be skeptical of the things he says, but he still writes good software.
Edit: you keep throwing "fraud" around. If he bought reviews, that's shifty and shouldn't be condoned. But fraud implies he stole something or tricked people out of money. It's perfectly OK for you not to like Dash, but I do and so do a lot of other people. I bought his software and he sent me a working license key, and then he supported it and cranked out a stream of updates. It might be false advertising, but I haven't be defrauded out of anything. I traded money for a tool I enjoy using.
And for the record, I have zero business relationship with him outside of those transactions (one each for each of the versions I've purchased). We've never communicated via any medium about anything other than those.