I've created an RSS feed on LiveJournal that links to the Steampunking Tumblr I mentioned last week. I picked that particular one because it has more actual "stuff" instead of soft-core porn/exhibitionism, and because the thing tagged "steampunk" at Tumblr yanks in every Tumblr entry using that keyword (i.e., rampant overlap and pages and pages of stories).
I'm pretty sure anyone can now subscribe to the LJ feed at random, just by friending it: steampunk_tmblr
Let me know if that works (or doesn't)!
ETA: Found this incredible Steampunk House On Wheels while web-surfing last night. I am in awe of its gloriousness! Be sure to click on the Top Ten Strange Buildings links while you're at that site. Yowza.