It looks like the local market is heating up even more, with MSNBC.com poised to announce the acquisition of Chicago-based EveryBlock, according to sources close to the situation.Sources said MSNBC.com--a joint venture of Microsoft and NBC Universal--paid several million dollars for the "hyper-local" information site, which is up and running in 15 cities, including New York, San Francisco, Seattle, Chicago and Boston. Recently, the Time Warner online unit AOL paid about $10 million in June to buy Patch Media, a platform that does deeply localized coverage of communities about a range of topics.