So, three of my old accounts apparently qualified for the buy-shares offer. Two of them were over the 200k karma threshold to get the offer. Interestingly, the third account had only 191k karma and got the message a day or two later.

Even more interestingly, yesterday a fourth account that I haven't posted to in over a decade received the offer, and this one only had 50k karma. Admittedly, several accounts were mods, but they were mods of extremely small, very inactive subs, and I had de-modded myself after deleting my data. They also sent an email to the my registered email address for the fourth account (but I don't know if that's relevant because none of my other accounts had emails registered).

I'm not sure what's going on. Did they get so little response from the early offers that they're going to the accounts of former mods or lowering the karma requirements? I know a couple of my accounts ended up connected by IP information; did they try to contact my old fourth account by PM and email because it was somehow connected to the higher-level accounts, or because they're getting desperate? Maybe they're just trying to get lots of numbers to show that redditors are eager to participate, to gin up an ignorant public's enthusiasm prior to the IPO?

I have to think that, at some level, they're getting desperate, because it seems so much effort to go to, to dig up an account that hasn't posted in a decade and then send PMs and emails to it.