@Timmi

IWALY is the best seling non-charitable single of all time (in a single yr from release). That's a FACT! It racked up close to 10 mil it's first year of release. Currently it has over 12 mil copies sold as of 2008. You are correct in saying, however, that it's not the biggest CUMULATIVE best selling single of all time since inception.

Here the biggest selling singles in history (cumulated) since inception.

http://en.wikipedia.org/wiki/List_of_best-selling_singles_worldwide

Over 20 mil copies to date:

Bill Haley & His Comets "Rock Around the Clock" 1954 Rock and roll 25mil
Bing Crosby "White Christmas" 1942 Pop 50mil
Bing Crosby "Silent Night" 1935 Traditional pop 30mil
Elton John "Candle in the Wind 1997"/"Something About the Way You Look Tonight" 1997 Pop 33mil
USA for Africa "We Are the World" 1985 Pop 20mil

Between 10-19.9 mil:

ABBA "Fernando" 1976 Pop 10mil
Baccara "Yes Sir, I Can Boogie" 1977 Pop 18mil
The Beatles "I Want to Hold Your Hand" 1964 Rock 12mil
Cher "Believe" 1998 Pop, dance 10mil
George McCrae "Rock Your Baby" 1974 Disco 11mil
The Ink Spots "If I Didn't Care" 1936 Doo-wop 19mil
Middle of the Road "Chirpy Chirpy Cheep Cheep" 1971 Pop 10mil
Mills Brothers "Paper Doll" 1943 Country 11mil
The Monkees "I'm a Believer" 1966 Pop 10mil
Procol Harum "A Whiter Shade of Pale" 1967 Pop 10mil
Roger Whittaker "The Last Farewell" 1975 Pop 11mil
Roy Acuff "Wabash Cannonball" 1942 Country 10mil
Scorpions "Wind of Change" 1991 Hard Rock 14mil
Shakira featuring Wyclef Jean "Hips Don't Lie" 2006 Latin pop 10mil
Terry Jacks "Seasons in the Sun" 1974 Pop 11.5mil
Village People "Y.M.C.A." 1978 Pop, disco 12mil
Whitney Houston "I Will Always Love You" 1992 R&B, soul 12mil

There is the last category of 5 - 9.9mil but too many artists to post.

PLEASE NOTE, MARIAH CAREY DOES NOT EXIST ANYWHERE IN ANY CATEGORY!!!

In fact Lady Gaga, Taylor Swift, Katy Perry, Beyonce, Britney and even Flo-rida have sold higher selling singles than FAT-riah.

Now yall LAMBS can STFU already!!!!!!!!