Should I apply to every job I see on a company site?
I was looking at a Jobs/Careers section for a large and well known company. There are at least a dozen jobs listed that I am qualified for, but worry that if I apply to them all I might hurt my chances. For example the HR screeners will get tired of seeing my name or if some of the jobs have the same hiring manager they might be bothered that I wasn't focused on a single job. The problem is that the jobs don't have enough detail for me to know if one of them is a better fit than the others.
Should I just apply to them all on the assumption that everyone does that?
Should I just apply to a couple and hope hit the ones that are a good fit?
Or, should I consider some other action or method?