There is a 7-day Trial of Planetside for download at FilePlanet.
You don't need to be a paying FilePlanet member to download it, and you don't need a creditcard to play the demo.

http://www.fileplanet.com/files/120000/127374.shtml

I must say that the game is Very Fun and addicting. And there is constant addition of new stuff. 2 Vehicles and a new way to capture certain bases has been added for example since the game was released.

There is already an expansion on the way (I heard that was how Sony works ;)), but those who play the expansion can play together with those who don't.

I'm on my 4th day, and I think I will buy the game actually.
So come on and try it out :)

I wouldn't recomend anyone to play on the European Server today though... it's laggy as hell today.

If it wasn't for these facts:

a) I'm forced onto a net connection that although very fast, costs $NZ0.17 per mB, and

b) My pc probably wouldn't run planetside because of crappy graphics card,

I would download this and check it out.

this is a fun game, but DON"T get it if you don't have a good pc.

i only have a 32 mb graphics card, so the game lags like crazy, and i had to quit playing because of this:( I'm getting a new computer soon though, so i will play again eventually.