Putting something back into chess
Apart from playing way too much chess on way too many sites, I also put a fair bit of time promoting the game in my local area.
I've run a free chess club for over ten years. It's run after school and is obviously aimed fairly and squarely at juniors. We average 20 players each week. We also get a few adults along each week and this is great in helping impart knowledge to the youngsters.
http://www.sachess.asn.au/sa-chess-clubs/293-ingle-farm-library-chess-club/19-ingle-farm-library-chess-club
I occasionally do coaching in the school holidays for Mato Jelic's Chess School SA. http://www.chessschool.com.au/holiday_chess_7.html
If you don't know of Mato you should. Mato has one of the most popular chess youtube channels.
https://www.youtube.com/user/MatoJelic
I also do private one on one junior coaching as required. OK. at the moment I only have one student, and Mato says I don't charge enough, but it's better than nothing!
So take it from me you don't need to be a great player to start a club, help spread chess into the wider community, or help those who need it.
If you have the desire you can make difference!