According to my friend Darika, the answer is no. This was down to the fact that the journalists in general felt that Twitter was a personal place and Facebook is even more so. This begs a question about brand engagement strategies on Twitter and Facebook. I know that I get quite irritated when brands which I wouldn't associate myself with go and follow me on Twitter, or people hit me up with Facebook applications and group invites for a similar reason and I think that the engagement strategy needs to be audience initiated and brand facilitated.
The problem is that many brands don't facilitate by being useful, but by trying to get up in your face. Thoughts welcome.