Airplanes - B.o.B. feat. Hayley Williams
Baby - Justin Bieber feat. Ludacris
Bad Romance - Lady GaGa
Break Your Heart - Taio Cruz (feat. Ludacris)
California Gurls - Katy Perry feat. Snoop Dogg
Hey, Soul Sister - Train
Love The Way You Lie - Eminem feat. Rihanna
Need You Now - Lady Antebellum
OMG - Usher feat. Will.I.Am
Rude Boy - Rihanna
Telephone - Lady GaGa feat. Beyoncé
Tik Tok - Ke$ha

Witch song is the biggest hit of 2010???

Love The Way You Lie - Eminem feat. Rihanna

Airplanes is my #2

Love the way you LIe
Telephone next...............

I honestly think that LTWYL, Tik Tok & California Gurls are the biggest hits by now!!

Hey, Soul Sister has sold the most so far, thus that's my vote.

Airplanes - B.o.B. feat. Hayley Williams

California Gurls - Katy Perry feat. Snoop Dogg

Hey Soul Sister is the best-selling single of the year. It's just ironic it didn't peak at #1.

TiK ToK

I voted Bad Romance

Not only because GaGa is queen & I'm a GaGa stan/fan, but also because 8 VMA's (7/8 of those were for BR), the best music video of the year, the most viewed video of the year (not including Youtube), etc.. it may not have hit #1 or doesn't have the most downloads, but it was HUGE.

Love the way you lie

OMG

Biggest hits? TiK ToK and Bad Romance obviously.

Best songs? Bad Romance and Love The Way You Lie.

Biggest hit: Bad Romance.

OMG

For some reason I still consider BR 2009 and Tik Tok leaning towards 2010. Just based on how much I've been hearing them.

Why are Bad Romance & Tik Tok included?

California Gurls - Katy Perry feat. Snoop Dogg

PS: Bad romance and Break your heart are from 2009.

Also it,I just haven't met you yet and Hold on by Michael Bublé are the only new songs that I loved this year..