IMO: Jeff is right, they are cheap for a reason. Most properties here are not good for "buy and hold' investing. You will get negative appreciation in the cheap markets. In fact, sales prices in low income neighborhoods (Duquesne, Clairton, McKeesport) have dropped 43%, while better neighborhoods (Mt. Lebanon, Bethel Park, Upper St. Clair) have only dropped 5% in the last year (according to RealStats). Poor school districts continue the downward spiral, while the others are struggling to hold ground.
Here's a recent local article.
http://www.post-gazette.com/pg/09241/993996-28.stm
Pittsburgh's a hole, trust me. Great for the wholesaler trying to make a buck off the out-of-town investor... but don't pee on my leg and tell me it's raining. Now, dont get me wrong, I appreciate the influx of out-of-town money, every little bit helps. It's just that these properties are VERY management intensive with ALOT of tenant turnover. You just better "buy right" and protect your assets. Personally, my money stays out these depressed neighborhoods. For instance in Duquesne there are blocks, and blocks of vacant homes. In some blocks, every 4th or 5th house/lot is OCCUPIED. How can you make money in an area like that where anyone can buy any house for $8,000 and less.
I know a guy who got a house for $1 Buck in Duquesne. Put $15,000 in it, and couldn't get rent to save his life. Lucky for him, it caught fire. At least in areas like Mckeesport, the Municipality tears down 250 homes a year.
After I said all that, if you're still going to invest, MCKEESPORT is where I'd say the best chance of upside is right now... Cheap housing stock, some new construction starting, decent school district with great budget, AND most importantly the political will and resources to elevate the market.