The initial problems that inspired the biggest companies in technology
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On the other hand.. if this really only took 100 hours to compile, that's impressive.
It's really important to avoid anything that feels to readers like a bait-and-switch. It's ok to write about / include your own startup in a post, but you should be really explicit about it and you should do it up front, because readers feel misled if they encounter it later.
I have some notes that I send to startups who are trying to write for HN, explaining various pitfalls including this one. If the OP or anyone else wants a copy, email hn@ycombinator.com and I'll send it.
As much as the original order was indeed mostly random, I also placed them so that each 'pair' side by side were roughly the same length, purely for aesthetic reasons. I think alphabetical order might just make more sense.
The Facebook one is silly as well since MySpace existed…