As the Republican Party rebuilds after its defeat at the polls in November, the discussion has centered not so much on honing its message as on messaging -- on Twitter, Facebook and MySpace. In previous elections, the GOP often used technology in targeting voters more effectively than Democrats did; now the party is playing catch-up. RNC members, meeting in Washington, are scheduled to elect a party chairman on Friday ... Chuck DeVore ... a little-known California Assemblyman and ... former aerospace-company executive has already begun contesting the U.S. Senate seat held by Democrat Barbara Boxer, who faces re-election in 2010,...