I think a big part of why the numbers posting drop off is because it's quite healthy to have a complete break from training
In 2011 I posted right through the year and in 2012 this thread worked fantastically as a motivator, but after the marathon then IM cycle I just really needed a complete break from the numbers so did all my training without any garmin and just ran, cycled and swum for the joy of it!
I'd be gutted if there wasn't a 2013 thread