1998 is crazy

Can you please provide more context or information about what you mean by "1998 is crazy"?

what song was popular in 2007

There were numerous popular songs in 2007 across various genres. Some notable hits include "Umbrella" by Rihanna featuring Jay-Z, "Hey There Delilah" by Plain White T's, "Crank That (Soulja Boy)" by Soulja Boy Tell'em, "Irreplaceable" by Beyoncé, "Big Girls Don't Cry" by Fergie, and "Stronger" by Kanye West, to name just a few.

2010?

Some popular songs in 2010 include "Just the Way You Are" by Bruno Mars, "Teenage Dream" by Katy Perry, "Love the Way You Lie" by Eminem featuring Rihanna, "Grenade" by Bruno Mars, "Firework" by Katy Perry, and "Empire State of Mind" by Jay-Z and Alicia Keys. These are just a few examples, as there were many other hit songs released in 2010.