I'm looking for a house, and a few that I have looked at have cracks in the corner of the concrete foundation. I've only seen it on houses that have a basement.
Here's some links to photos of two of the houses:
worst one:
How bad is this? Can it be safely ignored? Is it worse if more than one corner is cracked?
Or does it need repair? If so, what is involved? Just some drilling, insert some rebar, and some concrete?