Back in 2004, I wrote about a company doing domain scams – trying to scare people into thinking that someone else was trying to register domain names that are similar to their own. It seems this practise has become very popular, as I am seeing many of these types of scams going through various mail systems. I try block them where I can, but you can't stop em all. They mostly seem to originate from China these days.
So, just be warned, that if you get an email from some company – particularly from China – that "someone" is trying to register your "intellectual property" (as they tend to call it), just delete it. It's a scam to try get you to register domain names that you don't need at incredibly high prices. Personally, I usually respond with a 'Fuck off', but that's just me.