Dwiant,
I guess the first question to ask is when do you hold elections?
Do you know of some people willing to step up and be a part of the board or attend meetings? Sometimes getting the negative person out of a control position (like treasurer who has knowledge of about everything happening) gives their "info/rumor/nastiness" less credibility. It also allows for others to be more informed and ready to step up to the plate.
We had a very small showing of parents who came to meetings, etc. But have slowly worked to get more people involved. A couple of things we've done is to start up a website and have our own PTO Newsletter. (In the past, we had one page with small bits of info in with the School Newsletter.)
By getting upbeat information to the whole school, the negative naggers were fewer and much quieter. Too many people were already seeing the positives!
We use
OrgSites
for our website. This is a free site and awesome to work with. Some of the formatting is very basic and you have to stay within their scope. But it's a great place to start up and get a feel for it. The editing and adding of information is pretty straightfoward. A good place to get your feet wet in the world of HTML and all that. The biggest concern I have, is making sure I get on often enough to update. Nothing worse than reading about "an upcoming event" that happened two months ago.
I think keeping folks current and updated on what you have been doing helps to keep the negatives at a minimum. You never will be able to keep from ruffling some feathers
, but what fun would it be if we all thought the same thing, the same way at the same time!