The LEGO Pirates Forum is a joint venture between Eurobricks and Classic-Pirates.com.
Classic-Pirates.com emerged from the LEGO Pirates Forum to provide an information resource solely focused upon LEGO Pirates. The original intention was to migrate the forum to Classic-Pirates.com at some point in the future, however this hasn't been deemed viable.
Nonetheless, Classic-Pirates.com has become a prosperous online community in its own right and the blog (not including forum) receives between 16,000 to 20,000 unique visitors per month.
The relationship between Eurobricks and Classic-Pirates.com is synergistic. Classic-Pirates.com drives additional traffic to the LEGO Pirates Forum on Eurobricks, while Eurobrick's shares it's extremely large userbase with Classic-Pirates.com.
As this appears to be the most affluent LEGO Pirates Forum there seems little point modifying the arrangement. "If ain't broke, don't fix it!"
The previous Pirate Forum skin was also inconsistent with the other Eurobricks skins, so little has changed in that respect.