What does SK stand for?

What does SK mean?

SK	Soon Keong Miscellaneous » Unclassified
SK	Super Kingdom Miscellaneous » Unclassified
SK	Sakura Kid Miscellaneous » Unclassified
SK	Storm Kestrel Miscellaneous » Science Fiction
SK	St. Louis Field Office Governmental » FBI Files
SK	Sari Kultur Miscellaneous » Unclassified
SK	Soota Kraidoor (Royal Soccer club) Community » Sports
SK	Stupid Kludge Computing » Software
SK	Sunshine Kennels Miscellaneous » Unclassified
SK	Studier And Keppler's Miscellaneous » Unclassified
SK	Siti Khamsiah Miscellaneous » Unclassified
SK	Stanley And Kristie Miscellaneous » Unclassified
SK	Shinzu Kankyo Miscellaneous » Unclassified
SK	Samir Kadumi Miscellaneous » Unclassified
SK	Shuddha Kannadiga Miscellaneous » Unclassified
SK	Sonic Krab Miscellaneous » Unclassified
SK	Sex Kitten Miscellaneous » Unclassified
SK	Sangguniang Kabataan Miscellaneous » Unclassified
SK	Silver Knight Miscellaneous » Unclassified
SK	Self Keep Miscellaneous » Unclassified
SK	Swiss Knife Business » Products
SK	Software Kit Computing » Software
SK	Stock Knowledge Community » Educational
SK	Skein = Hank Miscellaneous » Construction
SK	Spawn Kill Internet