"Open Up", a collaboration between Leftfield and John Lydin is commonly credited to "Leftfied Lydon" (eg http://www.discogs.com/viewimages?release=4101). Under NGS this has become that with the two words linking to Leftfield and John Lydon. Hoever, any edit on these tracks seems to lose the space, changing the artist to LeftfieldLydon.

eg edit http://musicbrainz.org/release/fc141801-d1bc-31d9-853c-6918711e4a85 and go straight to the edit note without making any changes page to see the artist credit has changed.