Thank you for creating such a useful plug-in. I was using Limit Login Attempts and getting a lot of lockouts, so I wanted to see more detail (attempts/etc) so I installed your Activity Monitor plug in.
One thing I wanted was to see who/where the login attempts were coming from. You can manually do this one at a time online, but after some searching I found that you can do it via an API call to IPInfoDB.com for free. Based on the example code provided on their site, I added in this capability to Activity Monitor.
The output looks like this: http://postimage.org/image/ju25ospej/
I'd love to see this as an official feature in future versions of Activity Monitor, and I'd be happy to share the code I added/changed.