I remember working on a few early tools for VRML towards the end of the 90's... It was cool, but far from great... was remembered from the mention of VR in the article.

That said, my only regret with Bitcoin was deleting my early wallets when I realized the coins were only worth $.25 ... if I'd had any inkling what they'd be worth someday, I'd probably have just bought $1000 worth back then and zipped it up until closer to today. I'm truly curious how many bitcoins were similarly deleted from existence.