At startups events I am often asked about important qualities in the character of founders. Persistence strikes me as crucial. Startups have many setbacks along the way and possibly even near death experiences. Only someone with persistence will be able to come back from those and keep plugging away. A great story in our portfolio in this regard is the team at Soundcloud. Yesterday, Soundcloud launched their premium service Soundcloud Go, which combines an offline ad-free experience, the cata...