I know that Hyperlinks are handled by the client at the moment. That is why the plan is that when someone right clicks a sign, a message is sent to the player in chat which the player can click on to open the web page. For example you create a sign as normal: Connect to ourTeamspeakserver You look at the command and type /link www.minecraft-techworld.com/teamspeak When a player right clicks that sign, the plugin broadcasts a message to the player in the chat to click on. Click the link below to open the web page.www.minecraft-techworld.com/teamspeak
http://forums.bukkit.org/threads/admin-general-misc-signlink-access-to-a-webbrowser-with-just-a-sign-1-2-5r3-0.77778/ Next time search before requesting
Crap, I swear I searched for it but it didn't show up. I am surprised how I mentioned everything he build in though EDIT by Moderator: merged posts, please use the edit button instead of double posting.
EDIT: Oh, you already found something You could use this, but it offers a lot of extra functionality: http://dev.bukkit.org/server-mods/scriptblock/ Type /sbinteractcreate Player www.minecraft-techworld.com/teamspeak