Yes - if you buy the misspelled domain, you would most likely 301 Redirect to your main site. My point was whether that was worth doing. In those two instances

Yes - if you buy the misspelled domain, you would most likely 301 Redirect to your main site. My point was whether that was worth doing. In those two instances (where loss of customer or loss of brand strength was likely), I would suggest yes. If you're Facebook, Facebok.com won't be worth much - people will note the spelling error or hit Google and be properly directed. If you're Xobni, then Zobni.com might be worth it (so you don't lose potential clients who've kinda heard about you), and if you're Disney and you know Walt Dinsey is a massive South American porn star, then grabbing Dinsey.com would be wise.