In Windows Live Mail, in my contacts, I somehow have 283 contacts just named 'Q', all of whom are identical and contain no other information other than the name 'Q'.

When I try to delete them, the option to delete is grayed out.

On further investigation, they appear under the "social networks" category, which is presumably why they are greyed out.

However I have no idea which social networks I am actually linked to or how they came to be originally created.  I checked Skype and Facebook and neither of them contain any contacts just named 'Q', however I can't even see any indication of which social networks are linked to my contacts, so it's hard for me to know where to check