My daughter just started working for My Fitness Pal in San Francisco and she had been after me to try it out. So far so good, at least it keeps me accountable in writing down my meals and snacks. Now, if I could increase my activity it might go a little better. Yesterday I was able to walk for 45 minutes in the morning and tried for a repeat in the afternoon but only managed to get in a 25 minute walk in the evening before my knee became too painful.