My name is Justin Cardinal. I'm an IT professional and general tech enthusiast. I'm also developing an interest in photography.
Twitter - This tends to be more about tech and work than about personal stuff. When friends and family ask if I use twitter, I say "Yes, but you probably don't want to follow me".
App.net - I'm not very noisy here yet. Still deciding how to use the service, but I've definitely found some interesting people to follow.
Google Plus - I haven't fully embraced Google Plus yet for general use, but you can see what I've found interesting online via my +1's.
Facebook - I use Facebook exclusively for people who are my actual friends and family. If that describes you, feel free to connect with me there.
Google Reader Shared Items - My Shared Items on Google Reader. This also tends to be mostly tech-related content. No new content will be shared here since Google Reader has killed its sharing feature in favor of Google Plus.
Server Fault - "Server Fault is a Q&A site for system administrators and desktop support professionals that's free."
Last.fm - A "social music revolution". In other words, a great place to find new music from people with similar listening habits. With the right software, you can also track your own listening habits and share that information with your friends.
If you would like to contact me, it'd be best to find me via one of my social profiles above.