We had a similar situation climbing out of Lincoln [KLNK] to Omaha [KOMA]. Bird strike; some engine vibration; did NOT shut engine down; continued to Omaha [10-15 minutes maybe ?]. No big deal. Had the vibration been such that we shut the engine down, we probably would've gone back to Lincoln, but the time involved would be pretty close between that and continuing on to Omaha. We only had ONE fan blade damaged. What amazed me was that Maintainence merely filed the oposite blade down the same as the damaged one and ferried the aircraft to KSFO for an engine change !
Edit: BTW.....aircraft was a B-737-200.