I checked our Google Analytics and I saw that our website has got 2 strange referrals : rock.to/ForexPlatform/referral and rock.to/PaypalToForex Are they real referrals or it's some error?
I'd guess that they're shortened urls from some system and may well be fake. You'd need to check the page to see if your site is mentioned on them. If they're fake, that's fine, just ignore them.
Rock.to is a site to make the URL's shot... probaly some one has used a short URL created with rock.to to link to your site