I used to drive on Perry from West Bloomfield to Lake Orion everyday last year. On Perry, just south of Walton, there are prostitutes out during daylight hours, not sure what its like at night. Drug dealers hang out just a little further south on Perry at the carwash by the high school. There was also a shooting murder at the apartments on Walton just west of Perry a while back and that's within a so-called gated complex. I think that website is dead on. Why purchase in Pontiac? I know houses are cheap there but you can find houses cheap in just about any blue collar suburb in Detroit right now. Surely you can find safer neighborhoods that have a better chance of property values going up than Pontiac.
Homes: About to get much cheaper - Oct. 20, 2009
Detroit area homes are going to lose another 10% of their value in the next 9 months or so, you might just want to save up some money, do some more research, look at more areas and wait it out. You'll get a better bargain next year, hopefully in a better area.
Good luck!