19 for me. :P I'll be 20 in March. I've been preaching Windows Phone to people my age and younger for awhile now so don't worry. I'm trying. ;) (Although since they're kids my age they want the same thing everyone else has... which is Droid/iPhone. It's sad really.)
Gunna be turning 24 this year. I was a windows mobile person back in the Treo days 5 years ago and have bee supporting Microsoft from there. Good to see other people out there trying to get to the younger crowd. I even got one of my friends to change from Android over to windows phone.