Yes, from what I gather, SE seems to be an IT-based community; however they mention they are
expanding to some non-IT fields like cooking and have done so in some fields already with minor success.
The m.o. of the site seems to be pretty similar to ours: users "create" subjects on which they aggregate documentation of, one subdomain per overall subject. Unlike ours, which is based on enumeration, theirs is based on Q&A. As it stands, their adverstising model seems to be based on getting an overall ad provider, from which ads are segregated based on their reach across the different themed subdomains.
I'll try to get in touch with someone at the site to try and confirm this impression as to how to they plan to get their adverstising for the non-IT based subcommunities. Based fro what I read above, yeah, it may not be something that we can imitate (ie.: no venture capital), but it can still be something that we can model things after to clear somewhat the dependency between the ads and the content, which makes me remember Freezair For A Limited Time's (I think it was him/her) plan about sectioning namespaces and subject per subdomains — and that would help us enforce the veils. Although from what I read it is a PITA to set up.
Getting off this thread for a while. I'm expecting about 120 posts until I come back.