I've been using Ridewithgps for 2-3 weeks. I'd given up on the other available web-based tools and Mapsource is a joke for bicycles. RWG has been fairly solid at creating routes, but I've experienced the aforementioned problems creating course points. When zoomed in there seems to be a registration problem in addition to almost non-responsiveness in the course point designation mode. I know the designers are working this and related problems. This problem area also manifests with an inability to place a course point of one of two proximate segments.

Another problem I've observed and reported regards the time stamps on tcx file course points which are used to sequence these points on the Garmin. The current version doesn't calculate a time stamp, but rather uses a fixed value. I expect a rapid resolution of this problem. In my case I'd like to stick with tcx files to retain the ability to look ahead at terrain.

There is no telling whether the developers are in this for the long haul, but I believe the tool has promise and I'm going to stick with it