Big banks, it seems, are getting into the real estate market through the tax door. I do not consider this a good thing at all.
When a property owner is unable to pay property taxes the county will typically not take action for several years, other than pile up penalties and interest on the unpaid amount. At the end of that time the property will be sold at auction to recover the lost taxes. For the savvy investor this is a great way to pick up real estate for pennies on the dollar. There is an element of risk which requires good research to mitigate, but for a diligent investor it can pay big dividends.
Looking at it from a purely libertarian point of view this is just another market, which it is. There is something obscene, in my opinion, about these well funded entities coming in to feed off the carcass of the real estate market they have worked so effectively to destroy.