hmpf... the planet3 stuff is just another web site.
i went into a local 3 store here in ireland and ask them what i could do to use skype. they told me just start your phone and access planet three. i tried but only a proper 3 side was shown... so the sales clerk really ask me if i have a broadband SIM in my phone because i got the wrong page shown. so i checked out there local phones and voila it's just the page you are loading... anyway the same stuff applies to facebook and all the other pages they offer... only via there specific software.

and since the browser send out the wrong type of signature it is also blocked from the normal mobile surfing package and you really have to buy a mobile broadband package :-(