We don't have to try hard. If we remember someone's names, it's just like an extra 'quest' for us. If it doesn't work out, we could always let this drift away (and I'll be unpinning this if it doesn't get that active).
If you're the same guild, then it doesn't count because it would still be in your Buddy List. Basically, anyone can point their mouse over anyone in their Buddy List and find their location. No cheating :3 Props for ItchyPanda though.