The point of this page, as with all resource pages, is that Google doesn't tell you the difference between the good pages and the useless pages. In addition, when searching for information related to sexual orientation, there's a nontrivial risk of happening on unsavory material. Unless something has changed since I last researched these links, you'll find nothing of the sort at any of them.
There are lots of local/regional social and support groups. The simplest place
to find them is at the BRC's
database, but there's also a
list maintained by GLAAD.
Regional, national, and international bisexuality conferences (which usually
have a mix of support, activist, social, and academic content) are generally
announced on some of the above pages.
The periodical Bi Tribune is based in
Indiana, but is national in scope.