New York-based Openlist, a local, vertical search engine, was acquired by Marchex, which provides search and contextual marketing but also owns a network of thousands of "direct navigation" domains. Little-known Openlist was co-founded by former Jupiter analyst Matthew Berk as Local-i and has been around for roughly two years.
The deal is worth $13 million in cash and stock and Berk, among several others, now joins Marchex. One can think of Openlist as Citysearch built by aggregation. I think that Openlist is doing some of the most interesting work in Local right now; and the acquisition makes Marchex a potentially more formidable company in both local and vertical search.
You can read a more extensive post about the deal and the two companies on my blog.