Social media is part of the marketing strategy in cycling. Who is doing it well?

Simon Gerrans won the Tour Down Under for the second time Sunday, giving newly formed Australian Team GreenEDGE its first victory in a UCI WorldTour event.

Team Lotto-Belisol's Andre Greipel sprints to stage victory in final stage of 2012 Santos Tour Down Under; Team GreenEdge's Simon Gerrans wins 2012 Santos Tour Down Under.

Spain's Alejandro Valverde of Team Movistar made an emotional return from a two-year doping ban by winning the fifth and longest stage of the 2012 Santos Tour Down Under earlier today, closing in on overall victory in the first event of the 2012 UCI WorldTour.

Team Movistar's Alejandro Valverde sprints to stage victory in comeback race; Team GreenEdge's Simon Gerrans takes overall lead in 2012 Santos Tour Down Under.

Team Katusha's Oscar Freire grabs stage victory in sprint as Team BMC Racing's Martin Kohler regains overall race lead in 2012 Santos Tour Down Under.

Team Lotto-Belisol's Andre Greipel powers to 2nd stage victory in 2012 Santos Tour Down Under and reclaims overall race lead.

Germany's André Greipel won the third stage of cycling's Tour Down Under in a bunch sprint Thursday to regain the overall lead he had conceded a day earlier.

Australian William Clarke won the second stage of cycling's Tour Down Under on Wednesday, defying the peloton in one of the boldest individual breakaways in the history of the WorldTour event.

Team Uni-SA's Will Clarke solos to stage victory in 2012 Santos Tour Down Under; Team BMC Racing's Martin Kohler takes overall race lead from André Greipel.

Team Lotto-Belisol's Andre Greipel powers to stage victory ahead of Alessandro Petacchi (Lampre-ISD) and Hutarovich of Team FDJ-BigMat.

What will be the repercussions of the Ullrich and Contador cases?