Peter Zmijewski founded KeywordSpy a very powerful keyword tool that tracks all search advertising activities in any given industry. It provides in-depth competitor analysis and compares the results with the competitors marketing ads. Today KeywordSpy is highly recommended for any company, big or small, who is looking to work on multiple niches and wants to remain updated with their competitors’ internet marketing strategies.

KeywordSpy is mentioned in numerous books written by both its competitors and internet marketing specialists.