If the card is completely unrelated to your current or future relationship, place it in your contact management system. But don't stop there
Chat with people on all of their social media accounts. If you wait for a contact at a later time, they might not remember you and might ignore the connection request.
At the beginning of a relationship, you might not know the best way to communicate. When you get to know them better, you will get all the information you need to reconnect as you want and you are already connected.
You can also use their social media accounts for more information. If they are potential customers or suppliers, this helps you pre-qualify.
