I have a question about facebook subscriptions?

[Mechiel]

Hundreds of different notification combinations are available on Facebook. You can elect to have Facebook send you emails or SMS text messages for various events, including when someone friends you or sends you a message. You can even have Facebook send you texts only during certain hours of the day. It is all highly customizable. Turning off the notifications may be a bit trickier, as you may not remember which options you selected. Luckily all of the options for receiving SMS texts from Facebook are on two main pages in your Facebook account settings: "Mobile" and "Notifications."