What's a good website to use to witness to people?

I love witnessing. I Love the Lord. I want to share his goodness with everyone! I need a website that i can possibly join, or just go to... That is free. I particularly love ministering to young people. Internationally. I can't afford a mission trip, or i would be there in a heartbeat. I started a nonprofit organization for hungry children, religiously, called "Act On Hope". It didn't go anywhere and i am still not quite sure how to get it started. So, this is my alternative I guess. I feel like God has called me to minister. I haven't got my confirmation quite yet, but, i'm going full throtle this way. I want to please him. Please leave links and maybe reviews? Lol. Anything you can find. Perferrably something like the old Mormon Chat site, except for Christians. =) Thank you for all the answers & God bless you!