Guild Wars 2

Why does the person’s server show up but not their guild?

I know this might be hard with being able to rep multiple guilds, but I’m sure the information about the last represented guild is stored. Plus, most of the hardcore players usually stick to one main guild.

Edit:
I wrote a script to get the rankings for the top 20 achievement point rankers on my server (Darkhaven) and created a mapping to guilds (although I’m still missing it for some). Wouldn’t it be nice if the official leaderboards were more informative like this? http://www.darkhavenelite.com/sections/darkhavenranking

After you sign into your accounts, if you go to the leaderboards you can select any of your current guilds from a drop down menu. The options are,World, Guild and Friends and they rank you accordingly to the option you select. If you choose Guild another drop down appears where you can select your guild.

Yes, that’s only your guilds though. I would like to see what guilds people are in.