You never know what will happen when you join a community and interact positively with the people you find there.  You just never know.  If you have a positive outlook, good suggestions that you make could start a kind of chain reaction.   Presenting your ideas clearly and pleasantly enough makes it easier for people to feel receptive to your ideas.   I think it's OK to feel proud of positive things, great or small, that you may have had a hand in accomplishing.  It pays to remember that even a small presence within a community can make a difference.  Remember it about the positive things and also the negative things you might be tempted to do one day.  Be aware that your comments, good and bad, do affect other people and that by aligning yourself with a community you become a little bit responsible to it. 

gm steps back off the soapbox and goes shopping.  Note: post edited to improve grammar.