I am not sure social media experts ruined anything in particular, because real people are not even aware of them, but the problem with social media experts is actually:
- they want everything online to be offered for free, thus ad-supported,
- yet they want companies to pay them for their advise and services,
- they encourage things like social media (UGC, sharing, excessive openness that would make a hippie blush) that advertisers actually shun.
Also interesting to see what social media experts will say over the next few months and year as the social media hype goes fully off the rails and nearly every theory they pushed for the past few years gets debunked.
But back to the point: yeah, advising marketers to spend too much time worrying about Twitter which despite its growth remains a fad is a bit insane.
Read more on 2009 Year in Social Media from a non expert like yours-truly.