it is also vital to ensure that the advertising and other expenses you have incurred translates into sales. Cost per acquisition (CPA) and affiliate marketing are two of the methods used by Internet marketers nowadays. Below is a brief introduction of these two important Internet marketing tools.Since many businesses are beginning to understand the potential of internet marketing, it can be considered a medium that is growing. Businesses of all sizes are employing online promotion techniques from affiliate marketing to viral marketing. The internet has the capacity to reach every corner of the world, which make it a highly effective marketing tool. CPA is a good way to gauge the performance of your advertising as it takes into account the bottom line. Your CPA is effective when the rate is low. A low CPA means that it only takes very little advertising cost to make a visitor into a customer.There are still quite a few people who don't understand the power of online marketing, Internet marketing is very different from regular marketing practices. Being able to sell your products in real life does not mean that you will be able to do the same on the Internet. The playing field for marketing has drastically changed with the existence of the Internet. Instead of just advertising on various websites and having a user-friendly web store for your business,but they will soon see for themselves how successful it truly is. CPA refers to the advertising costs you incur for each sale you make. CPA includes the entire process, from getting an Internet user to visit your website via an advertisement or link, to browsing your catalogue and finally making the purchase. CPA is how much it takes - in terms of advertising - to convert a random Internet user into your customer.