7 karma · joined March 2, 2013
Solution: http://muscula.com
When I did I was doing the usual crappy stuff, sharing on forums, as a signature on posts, comments on reviews of other free survey solutions, and the like. (As I mentioned I'm bad at marketing - so I'm not the best person to answer your question)
If you read the firt part: http://obsurvey.blogspot.dk/2013/03/how-i-was-forced-to-crea...
You'll see that the growth is mostly word of mouth.
The most exciting stuff has been implementing things where I have been unsure if what I was trying to would be possible at all in a browser. The feeling you then get when it actually works, and you know that you've pushed a limit that you have never seen anyone do in the browser before, can' be beaten.
If you push yourself to the limit, think outside the box etc. You are going to need knowledge of algorithms.