Hello Troy? There are so many...
There are the social sites, these include Facebook, twitter, and Google plus.
There are also bookmarking sites like bundler, stumbleupon, pinterest, delicious and many more. I prefer pinterest and stumbleupon. Usually I get reasonable traffic from these two bookmarking sites.
There are so many more sites you can use depending on the audience you want to reach and the type of content you have to offer. All the best in your endeavours