Somehow you can know who views your profile ~ Facebook!?

[asha]

So after a long story I was looking at someones profile as they were putting things about me and my family on their status'. We are not friends through facebook nor was it my normal account ~ I have 2 as one is for selling stuff! I looked at the profile a few times a week ~ AND NOW I AM BLOCKED! No one (not even my family or friends know about my selling account) I have searched through loads of yahoo questions asking about if you can know who views your profile and they all say no facebook doesn't allow it! So if that is the case why on earth have they blocked me? How would they know I was looking?
I'm definitely blocked as I have used someone elses account to find the person and they are still on facebook!

[Matthew]

There is a site that can tell you who and how many people view your account every day

[J0nny3]

how do you know you're blocked? maybe they have deactivated their profile. which would look the same as how a blocked profile would look.
but If you can see the profile without being signed in then you are blocked

[Rom Cartridge]

Facebook doesn't allow people to track who views their profiles or contents. Third party applications are also are unable to track anybody.

Follow the source to see the Facebook's statement about this issue.