Looking on the internet deeply has found these results:

i don't care is the most popular phrase on the web.

i could care less 17,250,000 results on the web	i don't care 110,100,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	Nov 24, 2009 ... Music video by Apocalyptica featuring Adam Gontier of Three Days Grace performing I Don't Care. YouTube view counts pre VEVO: 410,026. order the new album 'Only�... Oct 3, 2014 ... 'I Don't Care' the new single from Cheryl released November 2nd. Preorder on iTunes http://po.st/CIDCIyd. Pre Oct 3, 2014 ... 'I Don't Care' the new single from Cheryl released November 2nd. Preorder on iTunes http://po.st/CIDCIyd. Pre order the new album 'Only�... May 6, 2012 ... I fucked a girl who had a boyfriend until she started developing feelings for me then dumped her, I DON'T CARE, I LOVE IT =) (I was joking...

i could care less

17,250,000 results on the web

i don't care

110,100,000 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

Nov 24, 2009 ... Music video by Apocalyptica featuring Adam Gontier of Three Days Grace performing I Don't Care. YouTube view counts pre
VEVO: 410,026.
order the new album 'Only�...
Oct 3, 2014 ... 'I Don't Care' the new single from Cheryl released November 2nd. Preorder on iTunes http://po.st/CIDCIyd. Pre
Oct 3, 2014 ... 'I Don't Care' the new single from Cheryl released November 2nd. Preorder on iTunes http://po.st/CIDCIyd. Pre
order the new album 'Only�...
May 6, 2012 ... I fucked a girl who had a boyfriend until she started developing feelings for me then dumped her, I DON'T CARE, I LOVE IT =) (I was joking...