Personally I like the "Like" button. There's many a time when I think what someone has posted is really helpful and I would like to acknowledge it somehow - without the need for a post stating "Thank you" or "I agree" or such like. There's also many a time when I think "Wow, what a comeback!" and I also like that. I am not much of a poster but I do love to check in and have a read at the posts everyone else has taken the time to write. I'll definitely use the "Like" button and think it's a great addition to the forum.