My blackberry curve 8520 cant upload photos to facebook why?

Hi you must be logging in to facebook through the explorer instead of the facebook application from application world, i had the same problem when i first had mine, un til i realised it was so much easier when i downloaded my apps through app world, the blackberry icon gives you options when you log in , it will say send> hover over and it will give you a choice of any applications you have downloaded via application world,, eg, facebook, myspace, twitter, highlight your choice and press send/enter. good luck ,.