After finishing my PhD in mathematics not long ago, I decided to move away from academia and pursue a career in the commercial sector. I'm currently not affiliated with a university. In the long run, I might return to working at a university some day.
Recently, I recieved an invitation to become a reviewer for Mathematical Reviews. I'm flattered, but also hesitant as I can't fathom how much extra work this will be and if there's a benefit for me, besides learning more interesting things in my original academic field of expertise (which I've moved away from a bit).
How much work is it to review 1 paper per months, roughly speaking?
Would you see being a reviewer as an interesting CV item outside of academia?
Doing the reviews is usually not paid, correct?
This question is similar to Should I agree to review papers as a postdoc?, which didn't give me quite satisfactory answers since I'm not in academia anymore. It is also similar to Personal advantages of being a referee once you quit science? but that one is not about math reviews, which are different from refereeing a paper for a journal.