Could I get into any trouble for this (Egging on a burglar, in a sense)?

Yes, you could. Your conduct technically makes you an aider and abettor to the burglary, should it happen. You have described exactly where these people live, what the house looks like, and the lack of security. You could be charged with the burglary and punished exactly as if you had committed it yourself. Think twice before posting... think MANY times before posting.