First off, I'd use SpotWalla for tracking - you can have maps on all three, though; I do.
Second, Real Time mixing a pre-planned map with a active/current track or Spot message sounds good - and good luck with that! Actually, while I've hear that the was site that made that happen, the site is no longer on the web; perhaps there is another.
Third, the good news; SpotWalla recently released a beta for its SpotWalla APi - SWAPI. I've done some looking at it and think that it is just what everyone is waiting for. I expect someone is already working on an Androd App for it. Myself, I will look into this issue this January when the weather turns cold and I am forced indoors; I wanted this tool last summer while paddling the FCT.
Fourth, be slightly leery of placing Real-Time data where just anyone can see it. Few think abut just how badly that can go. The leap from an "innocuous newspaper article" to showing someone "where you are going to be" can turn out badly Re: Jenn Gibbons, On Mission To Row Around Lake Michigan.
"To be nobody but yourself - in a world which is doing its best, night and day, to make you like everybody else - means to fight the hardest battle which any human being can fight; and never stop fighting."