This is a living document. I collect critical perspectives on polyamory, especially those written by LGBTQ folk.

Ian Baker
Growing Up Poor With Three Parents: How nonmonogamy helped me to escape a life of poverty.

Polyamory Weekly
Responsible non-monogamy from a kink-friendly, pansexual point of view (podcast)

Sex Geek
10 realistic rules for good non-monogamous relationships
the problem with polynormativity
resource list (another compilation)

Dean Spade
For Lovers and Fighters
One of my goals in thinking about redefining the way we view relationships is to try to treat the people I date more like I treat my friends—try to be respectful and thoughtful and hav boundaries and reasonable expectations—and to try to treat my friends more like my dates—to give them special attention, honor my commitments to them, be consistent, and invest deeply in our futures together.

unicornsrus: the hunt for the hot bi babe (website)

Books:
The Ethical Slut by Janet Hardy and Dossie Easton
Love in Abundance by Kathy Labriola
Opening Up: A Guide to Creating and Sustaining Open Relationships by Tristan Taormino
Redefining Our Relationships by Wendy-O-Matik (free PDF of zine)

Resource for LGBTQ/kinky/poly folks in CO: 
Colorado Sex-Positive Professionals compiled by Shanna Katz