I think I have a few that might interest other readers. The first is a great retail place (no affiliation to myself) -
http://www.e-bogu.com. Very high quality equipment for all sword arts.
The second is a series of articles by author Dave Lowry -
http://www.koryu.com/library/authors.html#dlowry. Mr. Lowry is an exceptional writer and, by all accounts, a skilled sword practitioner.
The third is my own modest blog -
http://www.ikigaiway.com. I write about a lot of sword concepts in conjunction with other martial arts related topics.