This is exactly the concern I was going to raise. Having the official bitcointalkforum twitter page isn't a bad idea as it create room for more publicity based on retweets from members but then, this is very much the same as a forum user with a twitter account, tweeting about bitcoins and Altcoins as well though, the question of doubt will continue to arise with as to it's authenticity.
Clearly the influx of members to the forum is sure as rise and with it, the issue of spamming, plagiarism and spreading of wrong information would be more frequent, burdening the shoulders of forum moderators with the need to keep the serenity of the forum as it were but then, the growth of the community would be archived for sure.