Hello it's Griff and I don't know if you agree or not but I feel that you should get an alert for whenever someone you follow comes and goes offline. [EDIT] Capability of disabling Thanks for reading :D
I don't think those that follow a lot of people would like having this, but as long as there is a plugin for this, which also allows disabling of these alerts, I support.
If you were able to disable it then sure, some people may find it useful, but personally I don't really need it.
Support, as long as people are able to disable it. I would be fine myself, because I'm only following 7 people.