Anyone who's ever read the comments section of this blog knows who Hopfrog is. Hopfrog has been the most frequent commenter on here for some time.
It's funny, when I came back to the US from China in 2009, a long-time friend of mine who'd kept up with me in China through my blog asked me when I'd met/become friends with Hopfrog in Xi'an. I laughed. Hopfrog was never in Xi'an and I'd actually never met him in person. Hopfrog and I developed our friendship completely through our writings/back-and-forths on this blog.
Hopfrog and I still have never met in person. I consider him a good friend, though. He always adds thoughtful and high-level discussion to this blog. And, as I said when talking about another of my favorite commenters, Ramesh, he sports a refreshingly positive and constructive attitude, which is such a rarity here on the interwebs.
Hopfrog has started his own blog - Hopfrog's Walkabout. It is a chronicle of his hike on the Pacific Crest Trail from the US border of Mexico to the border of Canada. Hopfrog is several posts into his preparation for the hike. His writings definitely look like something readers here would enjoy.