They will flood us with their homogenised fast-food chains, music, and reality shows, wiping out our local Earth traditions. Our multinationals will be put out of business by the cheaper output of their interstellar corporations, and they'll buy off our politicians so they can outsource their low-pay jobs to Earth. Their advertising, flooding all the media, will promote an esthetics based on green skin and antennas which will lead us to be frustrated with our looks and spend our money on cosmetics to dye our skin and antenna implants... Welcome to galacticalisation.
