I just play around with ip tool and accidently check my wordpress.com blog ip address and found out that it's hosted in UK rather then US. This is very weird.
Then, I try to check couple of my friends blogs that is hosted in wordpress.com, then the result is different, some of them hosted in US and some of them in UK.
Any idea how to change my blog to US hosted blog rather then UK? ( since most of my visitor is from US )