Sarah Palin will need to shell out some cash if she wants youbetcha2012.com on yard signs during the next presidential campaign. Or, for that matter, sarah2012.com, spalin2012.com, or mamabear2012. It doesn't matter that the next presidential election is a year away and the list of contenders is foggy at best. A healthy market has cropped up for Palin URLs in anticipation of her potential run. The site names have been gobbled up by domain name squatters who want to profit on the resale or who want to use the real estate to politick on their own. For potential candidate...