c248316c_rom_a_SharePoint_Administrator__Notes
[Action] Bulk Site Creation [Alternatives] PowerShell will also allow you to achieve this but it would be tricky [Notes] 
Useful site that creates sub-sites swiftly. It accepts copy / paste parameters from the clip board that you may have prepared with an Excel spread sheet
Steve´s SharePoint Space | Another SharePoint blog, from a SharePoint Administrator
Notes