I know Facebook uses complex heuristics to determine who your "best" friends are and thus they move higher up the list of people when you type certain letters into the search bar- for instance, 's' would yield Sarah, Sam, and Stephen in the order of how much i interact with them.
However, my younger sister has been using my (generally idle) facebook to interact with some of her friends for several months. Now she has her own facebook, and I've begun using facebook more myself, but her friends show up above mine in the search bar.
Is there any way to reset the data collection? They aren't my "best" friends, and I feel creepy seeing the profiles of girls several years younger than I showing up all the time. I just want to start anew so MY friends will be the first results.