Super Heroes

The All-New All-Different Howling Curmudgeons: You can be the hero
A history of superhero roleplaying games told from a player's perspective, along with discussion and comments from others.
http://www.whiterose.org/howlingcurmudgeons/archives/006956.html

The 20' By 20' Room: Best Supers System?
Discussion of what the best superhero roleplaying game system is.
http://www.20by20room.com/2004/11/best_supers_sys.html

The Central Nexus
Descriptions of and characters for multiple systems. Includes DragonCon convention pictures and commentary.
http://www.thecentralnexus.com/

Department of World Justice
Non-system specific campaign set in the near future. Includes characters, organizations, and players.
http://www.angelfire.com/nt/valkyrja/dwj.html

Heroplay.com
Characters, articles, and a player registry for multiple gaming rules.
http://www.heroplay.com/site/news/index.php