External relationships shown in the sidebar have always been shown in 2 different styles - and the inconsistency keeps going on with the latest additions.

1st style: name of the relationship (used for official homepage, Allmusic, Bandcamp, BBC Music, Discogs, Google+, RateYourMusic, etc.)
2nd style: name of the page (used for Facebook, Last.fm, Myspace, SoundCloud, Twitter, YouTube, etc.)

I don't have a preference one way or the other, but it bugs me to see both being used side to side.
Trying to weigh pros and cons of each one, adopting the 1st style would make different MusicBrainz pages look more consistent, while the 2nd style would make it easier to spot errors.