Alert User Back Online
 

Interesting idea for a new hack.

There would be an option in the USERCP, where you could add usernames to your list of the alert system.

Then when a user comes backonline by refreshing the page or whatever, a popup comes up telling you they are back online.

For example, User A leaves his page open, goes to the store, etc. User B has his page open surfing around...goes idle for 5 minutes, and USER B comes back from the store. User A gets a notifciation instantly..