Messi wrote: "I am so excited! From now on we will be more closely connected through facebook." [Lionel Messi FB page]
He joins Barcelona teammates Andres Iniesta, Gerard Pique, David Villa and Pedro Rodriguez and Real Madrid rival Cristiano Ronaldo as Spanish league players with fan pages on the social-networking website.
Messi, who doesn't have a Twitter account, has scored 45 goals for defending Spanish champion Barcelona this season.