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Since all the websites seem to function around the same matter, and are controlled by you, someone in your situation may wish to file for an LLC as the corporate structure for the matter, and include all three websites in it. Technically one can set up a different LLC for every website, but this would be very impractical until/unless the websites expand and become very big.
Ergo, it is recommended to have all three businesses/websites under one LLC. Why LLC? It combines the ease of running a business like a mom-and-pop shop with little paperwork with the corporate liability protection of a corporation.
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