So on my facebook page at www.facebook.com/submissionfc under the links box I keep getting people posting links to their own websites or businesses. How exactly could I prevent this from happening?
yes unfortunately your options are to disallow them to make comments or spend a lot of time moderating & deleting
Go to your page, top left under your page image click Edit Page. Find Links and click Edit and select admin only. I have all permissions disabled, however my page continues to be spammed because people can still comment on your posts. All you can do is flag/report and delete.