I'm tempted to go through it and start deleting houses though because most of the ones I've streetpassed are not impressive. They're just one or two story houses with no theme, anything interesting about them, or it's just junk piled up in there.
This was me at JPop Summit and PAX Prime. : D I was getting streetpasses so often there was no way it was possible to keep up with them.I agree, cons are your best bet but to be honest, the most I ever streetpassed was at a japanese summer fest, literally everytime I looked I had 20 new houses. I cycled out the plaza almost completely that day (filled it and then new houses started bumping old ones) and I'm sure I missed a ton of people because I was too busy to check constantly.