organic traffic that is visiting your site. Note, that we say organic, which is free traffic from the search engines, and not traffic generated by PPC campaigns. Using a tool such as Google Analytics will allow you to track whether your SEO efforts are generating the desired increase in traffic.One point to note here is that SEO does not generally result in an overnight spike in traffic so you should track your traffic levels over a period of a month or so to get the full picture.#2 Conversion RateUltimately you want visitors to your website to take action, which might not always necessarily be to buy something. Often it may be that you want them to sign up for a webinar, or give you their email address in return for a free report. Regardless of what the desired action is, you should track the rate at which visitors 'convert' by taking that action.This can indicate the quality of the traffic coming to your site, or whether there needs to be an improvement in terms of the website's sales copy or call to action. The levels of conversion have a direct correlation to the amount of revenue a site is generating, which in turn influences the budget available for SEO resources in the future.