Although my icebiking friends in Alaska continue to use their studded bike tires, most of the Northern Hemisphere has escaped the grip of winter. Al asks, though, about information on studded tires.
This photo shows my Nashbar studded tire. Nashbar sells a 700×35 version also for CX and road bikes (for those that have the clearance for this width). The Nashbars are very affordable and often go on sale before the winter riding season.
Nokian studded tires are made in Finland and are considered the best bicycle tires for winter use on the market. They use super hard tungsten carbide studs. This means they don’t wear down like the cheaper tires do.
For complete information about these and other studded tires and where to buy them, see the Tires for Icebiking page.