What mysterious plan does Elon Musk have for X.com?

UPDATE: July 11, 2017, 12:17 a.m. EDT Updated with Musk's tweet about the purchase.

With all the weird ideas and concepts Elon Musk seeds on Twitter, keeping track of his next seemingly eccentric idea that may turn into a real business is essential. That's why Musk's latest acquisition is so very intriguing: X.com.

Musk didn't tout the domain buy publicly, but thanks to the ever watchful domain prospector site DomainInvesting we know that he bought the site from PayPal earlier this month for an undisclosed sum.

Old school internet heads will remember that Musk was the original owner of the domain back in 1999 when it was an online financial services company. X.com later merged with Confinity, which later rebranded itself as PayPal. A quick search of X.com on Archive.org shows that X.com was already redirecting to PayPal back in 2001.

Original image has been replaced. Credit: Mashable

A PayPal representative in contact with DomainInvesting has confirmed that Musk was indeed the buyer. "We are delighted to sell the domain x.com back to its previous owner, Elon Musk," PayPal's Amanda Miller told the site.

So what does this all mean?

Well it probably doesn’t mean that Musk is getting back into the online payments game. (Nothing's impossible with Musk, but he's solving bigger problems now.) But it could mean that SpaceX is in for a rebranding. Or maybe X.com will serve as a clearing house for all of Musk's projects, from Tesla to the Boring Company.

It's probably the coolest domain you could ever own (at least while we still care about domains).

Musk says that for now, the buy is mainly sentimental. But with all the plans he tends to cook up, it won't be surprising if it leads to something groundbreaking down the line.

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In the meantime, consider that Musk's Neuralink, a computer to brain interface he's developing, and the X.com domain would dovetail perfectly with the fictional Professor X, whose telepathic abilities are powered by mutant genes, not technology.

Hey, X-Men lovers can only hope.