Works great for me, on both FF2.x and 3.x, I've been using it for several years. Yahoo will give you errors if you query them much more than 10/hr, I've never gotten google errors (even with several computers on LAN all running TMN), so their threshold must be higher. It's really not necessary to query 10/min to muddy up your search history. TMN coexists nicely with CustomizeGoogle (to anonymize google cookies).