Alaska Gov. Sarah Palin plans to remain extremely visible and will give serious consideration to running for president in 2012, but has made no decision, a close friend said after her startling announcement Friday that she will resign her office. Friends say Palin plans to spend time writing her book, which is due this fall, then promote it heavily when it comes out in spring 2010. Palin is by far the Republican Party's biggest draw for fund-raisers and conservative events, and the friends say she plans to spend a lot of time traveling in "the lower 48" states, as Alaskans...