If it’s worth saying, but not worth its own post, here's a place to put it.
If you are new to LessWrong, here's the place to introduce yourself. Personal stories, anecdotes, or just general comments on how you found us and what you hope to get from the site and community are invited. This is also the place to discuss feature requests and other ideas you have for the site, if you don't want to write a full top-level post.
If you're new to the community, you can start reading the Highlights from the Sequences, a collection of posts about the core ideas of LessWrong.
If you want to explore the community more, I recommend reading the Library, checking recent Curated posts, seeing if there are any meetups in your area, and checking out the Getting Started section of the LessWrong FAQ. If you want to orient to the content on the site, you can also check out the Concepts section.
The Open Thread tag is here. The Open Thread sequence is here.
Yep, if the first vote takes the score to ≤ 0, then the post will be dropped off the latest list. This is somewhat ameliorated by:
(a) a fair number of people browsing https://lesswrong.com/allPosts
(b) https://greaterwrong.com having chronological sort by default
(c) posts appearing in recent discussion in order that they're posted (though I do wonder if we filter out negative karma posts from recent discussion)
I often play around with different karma / sorting mechanisms, and I do think it would be nice to have a more Bayesian approach that started with a stronger prior. My guess is the effect you're talking about isn't a big issue in practice, though probably worth a bit of my time to sample some negative karma posts.