I started using TrainerRoad software indoors in the winter about 3 years ago. Since then, my bike performance has steadily improved each year.
I did a blog post on the overview of the software and the give away of some promotional codes for $10 off if you are interested in trying it out. It’s something you defintely will not regret if you are into cycling or triathlon.
Check it out here:
http://mytriathlonandtrainingadventures.blogspot.ca/2014/02/trainerroad-overview.html