The MVDBMS Google Group replaced the comp.databases.pick UseNet newsgroup in early 2012 in an atttempt to thwart spammers and sociopaths by virtue of now being moderated. The CDP historical archives (1994-2012) are still searchable on groups.google.com. CDP is now haunted by ROLEX spammers and one drunk, lonely, bitter, unemployable former Pick contractor. Brace yourself if you visit there.
There are a few Pick-type user groups whose links can be found on our Pick Links page.
Wikipedia has some useful information on the Pick Operating System.