I noticed some strange things when running MapMyTracks logging against my own implementation of their API.
First of all the privacy setting is transferred as a
Secondly it seems that when internet connection is lost or not present at some point, the next update to the server is of type "start_activity", although it should be "update_activity".
Lastly I noticed that when using the export GPX Track option, the track is sent to the mapmytracks.com server, but I think it should honour the setting for the mapmytracks Url in the preferences.
Looking forward to your feedback and many thanks for this great application!
Cheers