Reddit NSFW Filter is a Google Chrome extension that allows you to filter out NSFW posts on reddit.
This extension adds a "[NSFW on/off]" link to all reddit pages (in the upper- right, next to the "preferences" link to allow you to quickly toggle NSFW).
Reddit NSFW Filter generally plays well with the Reddit Enhancement Suite (RES).
This was created by request. I am always open to any suggestions to improve it.