It removes many Last.fm annoyances and improves the style of their pages. Also the height of the artists pages is at least 970px smaller. This style:
- removes the space between main header and the top of the page;
- removes the red bkg for On Tour link over the main image;
- hides "Correct an artist name" link;
- hides the big Events section (it could be found on the top menu anyway or by clicking On Tour if available);
- removes Buy and Share buttons;
- removes featured videos and songs (but not the embedded Youtube videos);
- Similar Artists is always displayed in a horizontal row;
- replaces the grey background of the shoutbox with white;
- hides the UMG newsletter;
- moves the text displayed over similar artists pictures and album covers below these items;
- removes the borders around images from a profile.

Screenshots:
BEFORE: http://i.imgbox.com/adjFETNP.png
AFTER: http://i.imgbox.com/adyBCYJN.png