@Amanda Comeau I also meant to mention that regardless of the voting power that you and other investors may have, not all assessments or common charge increases are voted on. Check the bylaws for that. Also, increases and assessments affect the Board of Managers as well, and are not typically made in haste; they are typically put into place for a budgetary expense of some sort...chances are it wouldn't necessarily be one you would want to vote down if you had the opportunity anyway.
The Association I was referring to in my post has a major safety issue/liability that needs to be taken care of for example, and the funds just aren't there. They have to assess the owners...
@Mary Joe the Board of Managers (or Board of Directors if you are at a co-op) does have insurance against lawsuits, which they are required to have. It is called Directors and Officers insurance, and typically is in place to protect the management company as well. I'm glad you're thinking about that kind of thing before you get involved.
No matter how much the Board tries to do their fiduciary responsibility and have all the homeowners'/shareholders' interests in mind, there will always be at least one crazy person who just doesn't seem to get it. They may try to sue, but as long as no one was negligent and had everyone's best interests at heart, they shouldn't win. Don't let the crazies win!
Being a Board officer or member is a volunteer and thankless job, but if working with the right group of people, you can get a lot of great things accomplished for your community!
If you're not as interested in being a Board Member or attending the meetings, etc. but still want to help out, see if there's a committee you could join or start. For example, a good landscaping committee can really increase the curb appeal of a place. :)