Here's the reply I received to my Wikipedia inquiry. It's a response from a volunteer.
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Dear Bob Watson,
Thank you for your mail.
"Bob Watson" <BWatson@lvdl.org> schrieb:
> In light of Wikipedia's changing policy (registration required before
> creating a new entry), I'm wondering whether or not Wikipedia would
> consider partnering with the public library community.
Wikipedia is currently evaluating new policies in order to improve the current article basis and to deal with the consequences of having an open editing process. We appreciate any comment on how to do our job better, especially from librarians. I would like to point the following url to you:
http://en.wikipedia.org/wiki/Wikipedia:WikiProject_Librarians
> My own library is in the process of "adopting" the entries for the two
> towns (and also the township) that it primarily serves. We "know" the
> history, the economy, current officials, and the live web links.
I think this is great news and I would love to hear again from you about your experiences in keeping the relevant articles up to date.
> We're probably not the only ones doing this.
I hope not

Yours sincerely,
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The link leads to some librarian activity ... mostly fact checking and a bit o' category creation ... but not something along the lines of what I propose. I think the issue of bogus/malicious/erronious entries is one that Wikipedia will *have* to address even if it makes the process more complex and less "wiki."
It may well be that those of us here need to lead a charge from the library community end of things ... perhaps a brief article in LJ or American Libraries.
I'm up for it. Anyone else?