Have you ever gone into the plugins section of your WordPress dashboard only to see that several of your WordPress plugins have been updated? They don’t appear in the dashboard tab to see when you first log in, which I think would be really helpful. So, in order to keep up with my plugins I schedule one day a month on my calendar to do list to log into each blog and go into the plugins tab. I know it might not sound like a big deal to some but some plugins are updated rather frequently.
So. Anything I’m not using regularly I deactivate. If I see the words “there is a new version of whatver plugin available” I go to that page and take a quick look at the notes on it and upload the new version to my plugins directory and activate it. It’s just an easy way for me to remember to be sure I am running the latest stable version of the plugins I use.