I am planning to merge two sites that we own. I am not sure whether there will be any legal issues. Basically both the sites are in the beginning and in development stage but both the sites have registered users. Basically the site we will be closing is a community based site and the site we will be merging into is Shopping deals, coupons & classifieds site.

Could someone share your advise and any procedure that I should follow to complete the merge process without any issues in future.