Man, I really miss Horizontal Action. Noises From the Garage was great, too. Gearhead magazine is a pretty worthwhile read, esp. if you dig cars and punk/rock'n'roll. But yeah, get a subscription to Ugly Things. Mike Stax is a member of this network, actually, but I don't think he checks in very often. Too bad... it'd be great to have him contributing more.
In print, there's Ugly Things and Shindig. Ugly Things is by far the best. In fact, it's incredible. I do think that MRR has lots of entertaining reads that are non-music, and they do cover a decent amount of garage. They just had a cover story on Bad Sports and Ty segall.
Online, I'd recommend Terminal Boredom, Garage Hangover, Nortonville, Kicksville66, The Houndblog, WFMU Rock 'n' Soul Ichiban, KBD Records.