Davis and Lineweaver "Expanding Confusion: common misconceptions of cosmological horizons and the superluminal expansion of the universe" http://arxiv.org/astro-ph/0310808 Just came out 28 October Among other things, the paper explains how light can reach us even from objects that were receding away from us faster than c at the time the light was emitted. Clearest explanation I've seen so far. Quotes some eminent people (who should have known better) making mistakes and thereby illustrating common misconceptions about the cosmological redshift and expansion speeds. Steven Weinberg was caught in both "The First Three Minutes" and in his 1972 textbook "Gravitation and Cosmology" (!) for Weinberg quotes see bottom of page 21 and top of 22.