We helped him out reserving his bike, set the logistics on where to meet and what to bring, and planned a great ride for him. We went for an awesome 4.5 hour ride he would have never done by himself.
After a few days he sent us an email saying "Thanks a lot for the awesome day on excellent trails around Marin. It was just fantastic and I will never forget". Fredik also said: "Its cool to spend a day with people you don't know from before when we have a lot of common interests. Enjoyed the after bike beer we had too."
Read about what Fredik has to say about the mountain bike tour in his blog post which also includes pictures and a movie http://fredrik76.wordpress.