I'm not saying something like that will hold forever. It might take 2 months to figure out that sites check for that, and 2 weeks (/days) to code it up. If you

I'm not saying something like that will hold forever. It might take 2 months to figure out that sites check for that, and 2 weeks (/days) to code it up. If you make the information on your heuristic public, those 2 months just drop out straight.