Bidah - Innovation in Islam description

Undoubtedly Bid`ah (innovation) is the major cause for every evil seed that sprouts in the Muslim Ummah.
There is not a single deviance or deviant group that emerges except by the route of Bid`ah. We Muslims are disheartened to see us divide to such an extent, but do we all know the cause for it?
This Application will inform you that cause and why bid`ah is the most dangerous thing ever.