I'm glad to hear I'm not the only person to have re-written Tetris a number of times over the years. Usually it's what I use to try out a new game framework.
Thanks for posting this. I'm always on the lookout for interesting Tetris variants. I purchased (on iOS) for Quad Blocks, after playing it on your website.
Yes, I fully expected this to be an article about how to "fix" this problem situation. I have to say that I have been in a few of the positions in this sort of chain, and now if I'm the inviter, I always just CC both. Not forwarding on the entire chain feels dishonest. (Obviously the invitee doesn't need to read the whole thread, but it's there for posterity, and to give context.) If the "busy person" is so rude that they wouldn't want the introduction in the first place, then they can be that rude themselves, and not leave it to the middle person, IMO. If they're not rude but not interested, then they can take the 2 minutes it takes to compose a "bowing out" email. Sheesh.
This was exactly my thought. More tech books written by someone who is just learning the technology. This is one of the main reasons I barely ever buy tech books. Useless.