Many years ago I traveled with my family to the USA and we met very nice friends there. They showed us how to play baseball and when leaving they presented us a baseball bat as a gift to carry home. As the bat was too big to put into the normal luggage we went to carry it with us onto the plane. Arrived a stewardess stopped us with the words "this can be used as a weapon" and told us that they will take it and send us by post. Since this it happens sometimes that I remind those words.
Lately I talked to a few people who worry about leaving their footprints somewhere in the web and therefore participate only very few on forums or weblogs. What this has to do with the story above?
Well, in my opinion a lot of things and words can be used as a weapon. And no matter if you are a person getting active or if you stay passive some people could use your behaviour against you.
And on the other hand: A lot of things and words can be used to improve the world and help others. Introducing positive elements is more important than avoiding negative elements.
Let me give an example: If you participate on the web there could be bad guys sending you more spam, hacking your account and post harmful texts in your name or other things producing negative effects. But on the other hand you can use the web to expand your network, find friends, help other people or even get a well-known professional on the web.
Whatever you fear, take into consideration that usually everywhere are risks AND opportunities. Keep in mind that you do not live from avoiding negative but from producing and getting positives - like a good coffee, intensive good work, a pretty woman or a good glass of wine.
Take your choice.