Swift tweeted the video with accompanying message 'LOLOLOLOL THE SASS'
Swift sent parcel to fan Rebekah Bortnicker including money and homemade art
The new chart tracks artists’ popularity across all the various Billboard charts
Singer says she's been inundated with messages of gratitude
The pop singer turns 25 on Saturday (December 13)
Bragg had claimed that Swift pulled her music from Spotify to sign an exclusive deal with Google
Billy Bragg recently claimed Swift pulled her songs from Spotify in order to work with Google and YouTube's new streaming service
'The Office' actor says he 'actually loves' Taylor Swift
The singer regularly brings high-profile artists out during live shows
CEO writes lengthy blog post explaining current health of company and responding to "myths" about streaming