Product review (5 stars): SO FUN!
My husband randomly decided to start using these last summer.  He bought me inline skates so I could go out with him, but then I looked like a tool, so I asked him to get me some Freelines.  We are always skating on Freedom Plaza in front of the White House and have a great time.

Though I very highly recommend these, understand that its going to take time to learn, especially if you've never snow boarded, skateboarded, or surfed before.  I probably had to practice for a good 4 weeks before I could confidently go 20 feet.  Very fun, but bizarre at first, so have patience and remember to use your knee pads and wrist guards.  I've take some ugly spills and the wrist guards have total saved me.  I am a smaller woman, so I got youth-sized pads and that worked out well.