Do not upload anything which you do not own or are fully licensed to upload.
Images should be actual images of the artist. In the case of virtual groups or bands that appear in movies/tv shows, the characters may be shown.
No “funny”, or anti-artist images to be used. Similarly, those images should not contain any sexually explicit content, race hatred material or other offensive symbols or images.
Check the Community Guidelines for information on the kind of content which is not acceptable.
Remember: Abuse of the Last.fm image system may result in you being banned from uploading images or from the entire site – so, play nice and respect the rules!
Some of these will only be understood by fans/anti-fans of the relevant artist.