At the end of each week, #Top40Tweets lists a cross-section of artists on the current pop charts and puts their tweets on display (along with their current chart number) for your enjoyment/scrutiny. This week, we look at 5 artists on the Billboard Music Charts.

(Uncharted): Britney Spears – Till The World Ends

@britneyspears Hey Brit Brit. Mars is still looking good. Maybe someday an astronaut will bring me a gift, too. Drill bits crossed ;)

— Curiosity Rover (@MarsCuriosity) August 15, 2012

Two robots communicating; it’s a marvel of modern science. This oughtta put all of those “Britney Mars Landing” denier conspiracy theories to rest.

FUN FACT: I think that when we found out Britney would be a judge on X Factor USA this season, we all figured her critiques would be fairly innocuous. Based on this recent promo clip, that’s not exactly the case. It turns out Britney’s got some pretty harsh comments up her sleeve:

“I want to know who let you on stage.”

The new season of X Factor USA premieres September 12th and 13th on FOX.

(Uncharted): Jason Derulo – In My Head

studio guy fainted during our conversation… #crazy #awkward

— Jason Derulo (@jasonderulo) August 16, 2012

The studio engineer probably had an aneurism when Jason was asking his producer whether he should sing his own name 12 or 13 times during the song’s intro.

FUN FACT: Jason recently celebrated a one year anniversary with girlfriend Jordin Sparks. Derulo joked that Jordin is his “second most prized possession,” after his bejeweled neck-brace.

#4: Kanye West – Mercy feat. Big Sean, Pusha T, & 2 Chainz

I hate small talk.

— Kanye West (@kanyewest) August 14, 2012

Kanye doesn’t like a lot of things.

FUN FACT: Kim Kardashian’s ex-husband Kris Humphries recently served papers to Yeezy (relating to their divorce) using a Nordstrom box as a decoy. That’s one way to get his attention. Call it payback for the lyrics of “Cold.”

#68: Wale – Bag Of Money feat. Meek Mill, Rick Ross, & T-Pain

U make it easy for them to shit on our culture wit shyt like this RT @hazeccmg: This nigga @wale always being intellectual n shit

— Wale Folarin(@Wale) August 15, 2012

Good on you, Wale. A little intellectuality can only be good for hip-hop.

Dont be Naive

— Wale Folarin(@Wale) August 15, 2012

I hope thats how you spell it

— Wale Folarin(@Wale) August 15, 2012

Don’t worry, big guy. You got it right.

FUN FACT: Wale announced via Twitter that he has upcoming collaborations in the works with A$AP Rocky and Kendrick Lamar.

#2 (France): will.i.am – This Is Love feat. Eva Simons

I hope you found my car #fingerscrossed “@selfmaderyan: @iamwill I think I have some GOOD news for you! I will know in a hour for sure”

— will.i.am (@iamwill) August 15, 2012

Yes, will.i.am somehow managed to “misplace” a $700,000 custom-made car. TMZ reports:

FUN FACT: Looks like someone found his car. Bummer, I was hoping some valet driver having the joyride of the century in this monstrosity:

Busy in the studio working on @nicolescherzy album…tomorrow I’m going to pick up my car from @selfmaderyan…#bestnewsever #willpower

— will.i.am (@iamwill) August 16, 2012