I tend to think that this is an example of the need to beware of trivial inconveniences, the trivial inconvenience here being the need to subscribe to a mailing list.
Although I myself was perfectly willing to undergo that trivial inconvenience, I believed that many of my potential readers would not be, so I commented on Overcoming Bias instead of posting on SL4.
It would be interesting to have old-time SL4ers write an essay on lessons learned with running SL4 and what LessWrong does better or worse than it. Trivial inconvenience was more of an OB problem, I think; lack of moderation or links, and repetition, were bigger problems for me.
It'd also be a good idea to compile a categorized 'best of SL4' list of emails; for me, the worst part of SL4 was how repetitive a lot of it was (and how incredibly frustrating John Clark was with his obtuse misunderstandings of basic CS), which such a list would cut through. (As co...
This is probably of interest only to the old-timers here. (Ironically, as a cross-post, this is almost by definition spam for LW, since anyone really interested in the topic would already be subscribed to SL4 and would have seen the emails.)
In 13 March, I finally got around to a long outstanding bit of cleanup: suggesting that the equally long defunct SL4 list be formally closed, things tidied up, and the lights turned out. The suggestion met with a mixed (and muted) reception.
Last night I followed up with a second email comparing SL4 activity to activity on Extropy-chat, LW, OB, and MoR; it won't surprise anyone trying to drink from the firehose here that LW is approximately 3 orders of magnitude more active than SL4 is.