2011 is a big year for mobile marketing and facebook is gearing up to take advantage of this trend by forcing users to add mobile phone numbers to their profiles.
facebook users are now being asked to enter their mobile phone numbers and enable SMS texting from the social network in order to verify their identities for simple tasks such as logging in or setting up a vanity URL. If you’d rather not enter your mobile phone number in the network’s database, you are simply told to try again “at a later time”.
There is no word from facebook to clarify what “a later time” might mean, but this is proving an inconvenience for businesses that don’t use mobile phones or people would rather not add their mobile phone number to the network.

But let’s be clear, a mobile phone is not a requirement for being on facebook and doing business in the world’s #1 social network – but it’s fast becoming a necessity.