https://en.wikipedia.org/wiki/Extinction_(psychology)#burst … Another startup whose mailing list I've been on has suddenly 10xed their marketing emails and started using increasingly spammy subject lines. Last time this happened, the startup shut down a month or two later.
Reminds me of a phenomenon from online poker, where sites with liquidity / operational problems suddenly changed their tournament schedules to a very different point on the "make money now" <---> "keep ecosystem sustainable" spectrum.
