I had forgotten all about "Web Shaka" (YouOs). Far and away the most classic name for a company. I hope they are doing well wherever they went.
We, WebShaka, went on to work on Project Wedding after YouOS; when that site was acquired, we and YC had an exit.
The four of us are all in startups of various maturities; as someone already mentioned: Sam went on to start thesixtyone.com, which was round #2 of YC for him!