Harj and I did Auctomatic in Winter 07. We merged with Patrick just after YC. Harj is now a YC Partner. I did YC for the second time this summer with Tagstand.com.
I mention the merger here in a series of Viewpoints for the BBC: http://news.bbc.co.uk/2/hi/business/6701815.stm
Also, the outcome of Auctomatic: http://news.bbc.co.uk/2/hi/business/7315598.stm