You can always take it one step further and earn even more brownie points within your building. If you haven’t seen a neighbour for a while, stop and inquire as to whether they’ve been on a holiday. Given a bit of time and effort you could end up living next to your best friend, and who wouldn’t want that! But just remember it is important to allow your neighbours privacy as well. Showing too much interest can all too quickly earn you the title of the creepy or annoying neighbour. So find that line between friendly and pushy and stay on the right side of it.