The White House has released a new Web site, the “Reform Reality Check,” the latest “fact-check” site, aimed at debunking some of the more egregious characterizations of the still-amorphous health care reform effort. It is a signal that the Obama administration is settling in for a long slog against its conservative critics, a fight not just for the opinions of the great American mass, but for the actual facts about what health care reform will and will not do.