Secret spy services have been around for years, but have you ever thought about using these techniques for business purposes. The idea is to spy on your competitors, get inspiration on new ideas and ways to retain customers. Ad monitoring, keyword monitoring, link popularity as well as backlink tools are ways to get an inside peek at how well the market is doing. Web ranking, social media segments all show data that can improve your business by staying ahead of the competition.

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37 Marketing Tools to Spy on Your Competitors – Entrepreneur