Regarding the Watson and Crick reference: it helps when you have other people like Rosalind Franklin working through the nights doing X-ray crystallography and taking the "pictures" that shed the real light on the structure of DNA. It leaves enough time to write the papers, do the PR, and get the credit. And, I guess, there's more than enough time left over for "chasing popsies."
How about having the scores show up after a week (or X amount of time). Practically nobody votes on week-old posts, but I often use -- for example -- searchyc.com's average points per post to get a feel for a user's contributions.
That would balance the elimination of mob voting with being able to ascertain (historical) credibility.
The Mercurial subrepos are similar to and inspired by git's submodules (but, presumably, less user hostile). You can use this to group your app with the libraries it depends on, for instance.
http://gaijinhostsabin.justin-klein.com/the-rules-of-the-gam...