re:
Virtual Diet/Workout Buddy
i just posted about this on another thread, but i'm reposting it for you guys because i've found it really helpful! it's a free site called http://www.zelky.com, and it lets you track your workouts, fitness goals, and also create groups. the group feature may be a great way for you all to share a homepage where you can post messages back and forth, create schedules, share photos, etc. my friends and i use it for getting "pick-up" tennis games together, but i think it'd work great for virtual workout buddies too! :)
hth!