viaNow that Amazon has swallowed up Goodreads it's safe to say most roads from the book social network universe now end in Seattle. With the exception of LibraryThing the rest are now wholly owned subsidiaries of the e-commerce giant.The only road left not ending in the Emerald City goes through Portland, Maine. Though Amazon, through their acquisition of ABE books in 2008, owns a minority interest, there is still plenty of independent light emanating from Tim Spalding and the LibraryThing crew.It was late in 2007 when I first started covering the then emerging book social network field. Being a bookseller, living in...