The idea of informed consent applied here (which is EU law) gives SomeFacebookApp permission to access the data, like the text you have written says, and nothing beyond that.
Once they had accessed the data, they would not [legally] be able to store it, or use it for any purpose. Text like this worries me because it's clear there is some illegal intent - that doesn't mean I agree to the illegal action.
Once they had accessed the data, they would not [legally] be able to store it, or use it for any purpose. Text like this worries me because it's clear there is some illegal intent - that doesn't mean I agree to the illegal action.