The White House Blog, the administration's Web site used mostly to explain President Obama's programs and help Americans wade through the federal bureaucracy, has taken a decidedly political pre-election tone. Some days a how-to guide to his government while on others a lively daily presidential diary, the blog has recently been used to punch GOP opponents and their ideas. In the past two weeks, for example, the blog has taken a shot at a GOP lawmaker's threat to shut down the government and Minority Leader John Boehner's back-and-forth on extending Bush-era tax cuts to the rich. Some GOP-ers question the use of a taxpayer-funded site to bash the GOP, but Democratic strategists say it's the only way for the White House to deliver its message unfiltered. "It's really become a 'must' in any effective communications strategy," says former Democratic Party spokeswoman Karen Finney, a U.S. News blogger. "Given the proliferation of the 24-hour news cycle, blogs, opinion journalism, and the ease with which misinformation is circulated as fact, how could they not?"