I have been using Adept to track my website visitors, their behavior patterns, etc., for almost two years now without any problems whatsoever. The product is reliable as it never fails me in terms of its functionality or speed when performing tasks that are important. It's not free but you get what you pay for (quality). There isn't anything out there like this software -it does exactly what i need- has all features needed by even an average business owner. Tracking your customers' activities/behaviour helps identify potential issues with them which can be solved before they become serious enough to affect sales revenue.