Go Holga have an interesting lens hack. http://goholga.com/lens-hack-for-holga-camera/ . Also, the Go Holga forums are up and running again after some server issues a few months back http://goholga.com/forum/.
Awesome summer Polaroid photos at Eye Poetry http://is-theblog.blogspot.com/2009/08/wish-i-was-here.html
Holga Blog have an article on DIY Flash Mob Exhibitions http://www.holgablog.com/2009/08/24/how-to-d-i-y-flashmob-exhibition/
Big LSI discussion going on at Four Corners Dark http://nicnichols.com/FourCornersDark/?p=3891