While I was growing up in rural east-coast Canada, we had a lot of village gatherings. There were many pot luck dinners hosted as fundraisers or to celebrate something - proper Cape Breton hospitality. The whole village pitched in and families brought their favourite dishes: cold roast meats, bread rolls, salads, sweets... and my personal favourite - potato salad!
Ever since I have had a weakness for potato salad, and I always have to make a batch to accompany a barbecue.