Cracked exterior block wall. Should I run for the hills? PIC

[Kyle Gregg]

I was looking at a house today in baltimore and i stumbled across this nasty looking crack in the exterior wall. It looks like the house use to have a front porch that later was converted into living space. The crack is right where the porch meets the house. Should i stay clear? The house has been on the market for over 100 days and is currently overpriced. any input would be appreciated!