Echelon Magazine - ..."the Gay and Lesbian Business News Magazine" offers business news and information targeted to the GLBT community. They also have an employment board.
Human Rights Campaign organization has a helpful tool called the Corporate Equality Index which rates companies on how equitable they are in treating their LGBT employees. Web site also offers an employer search database for their non-discrimination policies and benefits.
LGBT CareerLink - Organization offers a direct recruiting route to the LGBT community through its job database, job resource page, and professional profiles for members. Good variety of jobs ranging from entry level to senior level with a good handful of jobs located in Minnesota.