Startup School Radio: How Optimizely Knew It Was on to Something Big
blog.ycombinator.com
blog.ycombinator.com
It's good to work your network to get first customers but every startup can do that. It's just common sense.
And nowhere in the article Optimizely claims this was how they knew they were onto "something big". So the title is misleading.
Even "on to something" is a click-bait title which HN guidelines say should be neutered. IMHO you don't need to force it, just be classy and straight-forward e.g. "YC Startup School Radio Ep. 3 - Optimizely & Lawn Love" or something.
The problem is that .ly is managed by Libya, and they tend to have restrictive laws and government practices that many people take issue with. So, many companies just got the -ly.com versions of their domains and made the switch.