Crazy Guy on a Bike is a good site and easy to use. I would suggest, however, not to post experiences while you ride. I find that while that may give some immediacy to the experience, it's too easy to post just random thought. I write letters home every night about the day's experiences (I don't always mail them) but that makes me self edit a bit. When I get home, I then use those letters as notes for fleshing out the stories of the trip. I may, or may not, include somethings while the letters may evoke other memories that lead to better stories.

I do post somethings to Facebook while on the road which I also use for my later postings but I find those thoughts to be a bit unfinished. It's a bit like cooking, I taste as I go along and add what is needed to make the meal better. But the early tastings can be a bit off.