Yeah just use free services. The best policy is to get something for nothing and expect more. Us that are paying members of Strava and the like don't mind paying for the freeloaders out there. @ $59 a year Strava may or may not be worth it to you. If the power data is "almost-useless" so be it. Might it be better to simply state that in your opinion the power data presentation on Strava was not worth it for you?