Buying website traffic shouldn't be a replacement for SEO and other conventional methods of online marketing, but it can certainly give you that edge you need in the highly competitive online market. You can improve your Alexa ranking, time on site and lower bounce rate, but most importantly - it will drive potential clients and bring your website in front of your target audience long before you will see the first results of your conventional marketing strategies.
While you should be concerned about a sudden dip in site visits, there's often a logical explanation for it, if you know where to look. Sometimes it's a simple and fast fix – a coding error, for instance – while in other cases, such as an algorithm change, it might take a bit longer to bounce back. Either way, it's important to look for the root of the problem so you can fix it.
Web analytics is the measurement of the behavior of visitors to a website. In a commercial context, it especially refers to the measurement of which aspects of the website work towards the business objectives of Internet marketing initiatives; for example, which landing pages encourage people to make a purchase. Notable vendors of web analytics software and services include Google Analytics, IBM Digital Analytics (formerly Coremetrics) and Adobe Omniture.