aristotle - 5:54 pm on Sep 28, 2012 (gmt 0)
@SevenCubed -- I wouldn't let concerns about scrapers prevent me from undertaking a project that I really wanted to do.
As for directories, several years ago I started a small directory for a fairly-obscure niche that I have a special interest in. It is a stricly "hand-made" direcory in basic html, no ads, nothing for sale. The only way anyone can submit a site is to send me an email. I'm very selective about what I include, and I review each site carefully and write my own descriptions. I enjoy doing it because it gives me a chance to recognize people who have put a lot of time and effort into creating good sites and then reward them by sending them traffic. Google has never de-indexed this directory, and in fact it is at the top of their SERPs for it's main keyword (Of course there isn't much competition since this is an off-the-beaten-path niche).
Occasionally I come across a similar directory that someone else has created for a small niche, and it seems to me that these are the type of directories that Google should give give some credence to in their algorithm since the listed sites have already been screened and evaluated by an independent judge.