A few oddball resources for Ultralight Backpacking:

A knowledge base article on long-term backpacking gear storage for optimum longevity.

A DIY formula to replace the (no longer produced) Hydropel water barrier / anti-chafing cream.

The Ultralight Backpacking Forum on Reddit.

Mike Clelland's Ultralight Backpackin' Tips: 153 Amazing & Inexpensive Tips For Extremely Lightweight Camping

A firsthand account of a hiker / grizzly bear encounter.

Gear used on the 2015 Winter Traverse of the PCT with Trauma and Pepper.

Will a bic mini lighter last for your entire thru hike?

Which Emergency / Rescue whistles are the loudest?

LNT principals: can I wash my dishes in a river?

MYOG: UL chess / checkers set, made of felt

MYOG: the supercat stove

Fannypacking the Sierras; it can be done.

Calories and the limits of human endurance.

Which bottles and filters have which threads?

Before 2000, "UL" backpacking was <12 lbs. Now it's <10 Lbs.