"Several UK Internet providers are blocking Pirate Bay’s perfectly legal promotion platform for independent artists. The Promo Bay website is currently being blocked by BT, Virgin Media, BE and possibly several other providers. A plausible explanation is that the Promo Bay domain is listed on the same blocklist that’s used to enforce the Pirate Bay blockade. However. the domain itself has never linked to infringing material, nor is it hosted on The Pirate Bay’s servers." - Torrentfreak.
This is a big silly move by big, silly companies. C'mon guys, be less silly. :)