A mortgage technology company is seeking data from Gulf Coast real estate professionals as it develops a website tracking the BP oil spill's impact on home values. Oxford, Miss.-based FNC Inc. will launch a website this fall tracking sale prices and property values for homes up to 100 miles from the coast since an April 20 oil rig explosion set off a massive oil leak in the Gulf. A recent Inman News article covered the real estate impact of the spill; property values could drop at least 30 percent in some affected areas, according to one forecast. Users of the Collateral Vision Gulf Coast Crisis website will eventually be able to plug in a ZIP code or county to find property values free of charge.The company is inviting industry professionals of all kinds -- community bankers, lenders, ...