I'm curious about how you know it was the man from next door who has looked at your profile on Linkedin?
I get notifications but it doesn't tell me who....as others have said it is a public networking forum.
They do sound very strange and I can understand how uncomfortable it makes you feel...in fact I'd suggest it's almost verging on harassment / stalking! "Whilst there is no strict legal definition of 'stalking', section 2A (3) of the PHA 1997 sets out examples of acts or omissions which, in particular circumstances, are ones associated with stalking. For example, following a person, watching or spying on them or forcing contact with the victim through any means, including social media.
The effect of such behaviour is to curtail a victim's freedom, leaving them feeling that they constantly have to be careful. In many cases, the conduct might appear innocent ( if it were to be taken in isolation), but when carried out repeatedly so as to amount to a course of conduct, it may then cause significant alarm, harassment or distress to the victim."
I'm thinking of the continual watching here....I'd start keeping notes and it may help you if you spoke with someone. There is a helpline who you can chat with about stalking etc....just running it through may give a different perspective or give you some coping strategies tel:08088020300
Nobody should feel "invaded".