interesting thread, I might just have to try sporty, thought I'd let you know about another free tracker GPSToday, their website is
http://www.geoterrestrial.com/ . I haven't figured out how to get distance from tracking yet, but it has lots of good features. Check it out! It's really fast but not so intuitive. Apparently only the standalone version is working properly right now, not the plugin. I'll be interested in seeing any feedback you might have.