The Supreme Court ruled today in a 5-4 decision that local governments may exercise eminent domain to take your property away and give it to someone else who will provide more tax revenue for the local government. While it's been clear from the Constitution that governments could take your property -- with just compensation -- for government purposes, this extends that principal a lot.
Personally, I think this sucks. But I suppose that depends on how much you trust your local government.
Did I mention that I live next door to the City of Chicago?