San Diego-based WhatRunsWhere, a startup which develops advertising tracking technology, said this morning that it has acquired Mobile Ad Spy, a UK-based mobile ad tracking startup. Financial terms of the buy were not disclosed. WhatRunsWhere said it would use the acquisition to launch a new offering in the mobile ad tracking market. WhatRunsWhere operates a service to help advertisers and their agencies to track their competitors online advertising campaigns; the firm's COO is Max Teitelbaum.