Buzz Bites (11/1/10): Has Demi Lovato Quit Twitter?

(Credit: Todd G/Splash News)

+ Just days after jokingly tweeting about being engaged, Demi Lovato has apparently deleted her Twitter account. (CNN)

+ The highly touted Nicki Minaj and Eminem duet, "Roman's Revenge," from Nicki's upcoming Pink Friday album, has hit the web. (Miss Info)

+ Christina Aguilera performed at an intimate concert for some lucky Halloween partygoers this weekend. (That Grape Juice)

+ Check out the bottle design for Katy Perry's upcoming perfume line, Purr. (Idolator)

+ In other Katy Perry news, there were apparently no "Firework"s for the newlyweds! Katy Perry was reportedly bit by a spider on her honeymoon with Russell Brand. The medication she took for it allegedly knocked her out for a majority of the getaway. (TheFABlife)

+ Drake has teased that Lil Wayne, due to be released from prison this Thursday, may make an appearance at Drizzy's Las Vegas tour stop. (MTV News)