How do you feel about people walking through your campsite?

My family does not walk through others sites. I prefer others not walk through ours. "What they say/how they say it" when I ask if I can help them as they walk through determines the rest of the encounter. I have a dog and now teenage children and none of them need stranger encounters in our campsite. The much needed and sometimes sorely missing common sense/common courtesy is taught if you expose yourself to be lacking! Nicely, but firmly. Has worked since I was a kid and my parents told me not to walk through other sites and watching my parents speak to uninvited guests. Works for my family now! You might say paying the proper etiquette lesson forward!