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I would second this, it is a very last ditch approach but in a worst case scenario, what else can you do? Has anyone actually done this? Any other considerations? Would you think it would be worth noindexing the original site first to get it out of the index before launching on a new domain? I am actually working with a few companies and upon reviewing the link profile, it is like 99% junk so in this instance, starting again with some outreach to the few good links is certainly a more attractive prospect but I would be interested to hear any feedback from folks that have done this.