Federer finally on twitter!

Roger Federer's perfect sense of timing on court has brought him a record 17 Grand Slam titles, but he admitted Friday he's been a little slow to appreciate the advantages of Twitter.

Roger Federer's perfect sense of timing on court has brought him a record 17 Grand Slam titles, but he admitted Friday he's been a little slow to appreciate the advantages of Twitter.

Federer, who can boast more than 12 million likes on his Face­book page, finally sign­ed up for the social media site late Thur­sd­ay and had over 72,000 followers by Friday afternoon. He still has a long way to go to catch Rafael Nadal, who has more than four million following him on Twitter.