Although there exist other slash pairings in Supernatural fandom, [[Sam/Dean]] (aka [[Wincest]]) is the most popular. Rising in popularity since the beginning of season four has also been [[Dean/Castiel]].
As of December 2009, there has been 8,917 Sam/Dean stories, 5,359 [[RPF|Jared/Jensen]], 487 [[Dean/Castiel]], 294 [[Dean/John]], 251 Jensen/Jeff and 228 stories slashing dean with an orginal male character (OMC).
Based on an analysis of nearly 30,000 stories fanfiction listed in the [[spnnewsletter|LJ Supernatural newsletter]], approximately 39% of Supernatural fan fiction is Wincest.As of December 2009, there has been 8,917 Sam/Dean stories, 5,359 [[RPF|Jared/Jensen]], 487 [[Dean/Castiel]], 294 [[Dean/John]], 251 Jensen/Jeff and 228 stories slashing Dean with an orginal male character (OMC)
Occasionally one or both of the brothers will be slashed with minor and/or recurring male characters; OMCs; or characters from other fandoms, including characters that have been portrayed by either [[Jensen Ackles]] or [[Jared Padalecki]] in another tv-series or movie (e.g., Sam/Jake from Devour, Sam/Alec from Dark Angel, Dean/Dean from Gilmore Girls). (See also: [[Crossover]]).