If it happens twice does that make it a tradition? Sure, why not. At the first BloggerCon last Fall, Gregor Rothfuss was in attendance from Switzerland. So, it seemed appropriate that a representative from his homeland would be in Boston this week for BloggerCon II. Bernhard Seefeld put up with my Cambridge tour guide/wanderings today. He runs search.ch, “The Swiss Search Engine” and is always on the lookout for a salsa dancing event. I managed to navigate him to the April On 2 event at Ryles in Inman Square tonight only after walking in the wrong direction for about 10 minutes down Hampshire Street.