Never got into "Second Life", but this thing caught my eye (more "chatroom"-esque than "MMORPG"-esque) ...
Originally posted by GoogleBlogIf you enter a Lively room embedded on your favorite blog or website, you can immediately get a sense of the room creator's interests, just by looking at the furniture and environment they chose. You can also express your own personality by customizing your avatar's look, showing people who you are without having to say a word. Of course, you can chat with each other, and you can also interact through animated actions.
Of course, I might as well use this opportunity to pimp my own room (lively.com) ... For some reason, the ability to post images on various posters/picture frames decorating your room is currently turned off (last time I checked anyway), but showing off YouTube clips is still intact.
Your router software should have a log that will show you devices currently active or maybe even historically using your network, just so you can confirm. It may list IP address, or perhaps even device names.