CRL Monitoring...is it possible?

I don't know anything out of the box that does it, but certificates has always been a dark area in my knowledge. Is it possible, likely yes. You'd have to answer these two questions: 1) is monitoring it important enough for me to write a logicmodule (which may involve no-code options) and 2) how would I monitor this today if it were my day job? If all I had to do was monitor this, would i interpret the output of a powershell command? Would I go to a website and manually parse through some data? Understanding how the data is obtained manually is the first step towards writing a module that can do that for you.