Aligning your online activities to suit your IP addresses mystical powers might bring good fortune. I just think it's a bit of fun.
Your IP address (AKA internet protocol address or internet address) is a number that uniquely identifies an internet connected device, such as your computer, to the internet. It's like an email address, but for computers, not humans.
Your internet service provider lends your computer/modem/router an IP address to use for a period of time, usually you don't have it permanently, you get a new one every few days or so.
Your computer identifies itself with an IP address. Everything you do on your computer, you do with a particular IP address. It's embedded in any email you send, and every website you visit.