When you join a new " social networking site " that is asking for your home address before you can become a member, how can you be sure this information will not be used inappropriatly?

The reason i ask is because i found a pretty cool web.site mastersofthearts.com that showcases works of art for free. They showcase every form of art from music, paintings, sculpture and so on. I make music and i love to draw, im just worried about bieng solicited in the future or worst.