Cape Town – Pope Benedict XVI blessed his hundreds of thousands of Twitter followers in his first tweet. "Dear friends, I am pleased to get in touch with you through Twitter. Thank you for your generous response. I bless all of you from my heart," he said in his first tweet. Since the pope last week announced he would start tweeting under the name @pontifex, around 625 000 people have registered to follow his main account, in English.Tens of thousands more are following his Arabic, French, German, Italian, Polish, Portuguese and Spanish accounts.The 140-character messages will not be written by the pope himself, but by Vatican officials who will submit them to him for approval.