Canadian charts are not the same as Billboard charts
The Canadian Singles Chart is based on CD single sales and nothing more. The Canadian BDS Airplay Chart is a very well-known chart because it's one of the only radio charts that does not use "recurrent play" to remove songs, which means that "Promiscuous" could re-enter in ten years' time. I'm surprised that Canadian charts are being treated exactly like Billboard charts, but they are very different; for example, the Canadian Dance Chart is not as well known as the airplay chart, but it's still in the article. This is likely because it's being used in the same way, but that's not right. Here it was claimed that non-Canadians should not include the airplay chart if their single did enter the Canadian Singles Chart. However, because it's clearly notable (and because Furtado is Canadian), it's use here is appropriate.