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.
My sense, regarding the read the most active thread desire, is that the most active thread might well be amongst either the team working on some project under discussion or across teams that are envolved in or impacted by some project. In such a case I would think knowing where the real discussion is taking place regarding some "corporate discussions" might be helpful and wanted.
I suppose the big question there is what about all the other high volume exchanges, are they more personality driven rather than subject/substance driven. Does the comment count just be a really noisy signal to try keying off?