poor_skills is a very cool community. I decided to do a search on LJ to see if I could find more communities with a similiar vibe.  I didn't join all of these, but I've listed the ones that I found that seemed worth mentioning.

First the active goodies:

dumpsterdiving I've heard this has gotten more popular. I'm not against scavenging, but there are a lot of safety issues to bear in mind. Sometimes people throw perfectly good things out, because they're too lazy to donate them. However a lot of trash is trash. Anyway if you're interested, here's a community for tips, announcing finds, and discussing legal/safety issues.

jobsupport I added this one to my friends page. It's a forum for discussing job/job hunting related questions. Thought it might come in handy.

goodbyedebt community devoted to getting out of debt.
debt_support similiar to above.

wealthandhealth I'm joining this one too. Very new community, but great concept. It's all about eating healthier and saving money at the same time.

budget_travel Traveling on budget. Cool.

brokefolks ...eh, honestly with poorskills it's kind of redundant, but same idea.
personalfinance Spreading the budget love to the middle class.
frugalliving more money saving idea swapping
budgetcuts101  and more

dave_ramsey the unoffical Dave Ramsey LiveJournal community. I am a Dave Ramsey fan, so I thought this was cool.
(Good example of Ramsey's Baby Steps [giant leaps] here: http://community.livejournal.com/dave_ramsey/10475.html )

microliving This seemed cool. Space can get expensive, so learning to get by with less is helpful.



The now dead, but might be revived:
spendthrift was started in 2003, last post 2004...looks likes a good idea that never got off the ground, but it's still technically open.
brightandbroke the intellectual side of poverty, I think, last post is 2007.
growing_food full or mini-garden can help suppliment the diet. Last post 2008.
simplifylife  Simplifying doesn't always save money, but often the two go hand in hand.  Main posting stopped in 2007, but there is one 2009 post hoping to restart things.
food_budget_100  food budgetting, UK version.
starting_small Small scale investing...interesting... my brother is getting close to the stage where he needs to think about investing, so I'll probably be doing some posts on the subject in the next few months.
debtproofliving  I like the name.

There were several location specific "poor" communities like :
poorintampabay , poorinbc  ,poorinpdx ,poorskills_au, etc. etc. I was too lazy to check all those out. 
 

Travel is a great way to broaden the mind and break up the rut.  When budgets are tight, day trips are a nice option since they cut out hotel costs.  Another way to cut out the hotel is to stay with friends, which is what I'll be doing on this trip.

The Canada portion of the trip I was planning kept getting whittled out until it was gone, so no Niagara this month.  I'm gonna try later this summer, maybe with my mom.  I mainly decided to cut Niagara because the things I wanted to do there (like the boat that takes you right up to the falls) didn't start until April.  But cutting it out is going to help a lot money wise too, and it'll make for less driving.

I'm also cutting costs by using the buddy system.  It's safer to travel with a friend, and we'll be splitting the gas.

The friends we're visiting will provide a few meals, but we borrowed my parent's cooler and are packing it with some drinks, sandwhiches, and snacks.  That should help us resist the temptation to stop at restaurants and convenience stores during our long drives.  We're driving up to Cleveland tomorrow and then down to D.C. on Sunday.  At least that's the plan unless we're thwarted by bad weather.

This is my first major road trip like this, so I'm not sure how well I'll handle the long drive, but we don't have any critical times to make and can stop as we need so I'm not too worried.  May not have net access until I'm back.