I think some updates are clearly Benito (his PR
rep) but some are him - the trophy photo actually seems more likely to be him. Benito lives in Monte Carlo, not Mallorca. Can't imagine Nadal was told to take a photo of his shoes with the trophies in the background and then to send it to Benito to post - all a bit complicated really. Seems more likely he has to post something daily-ish to keep sponsors happy (since his Nike gear isn't being seen on the tennis courts) and so he combined the photo with an interesting location.
Some of the more spontaneous responses to fans also seem more likely to be him e.g. he said the other day that he was looking forward to playing Federer again - whereas some updates are clearly by others in his team. If anything I think the time off has meant he's using it more himself than just having it updated as a marketing exercise.
yes of course you're right some are Rafael's (but Benito can advice him to take this or that kind of picture), I meant especially the video of his matches with Roger and some posts which have looked "nostalgic" to some.
It's not the impression he gives that he's nostalgic and depressed from the l'Equipe journalists' impressions when they interviewed him or from the photos playing gulf or whatever.