Analysis of your website's performance enables you to identify problem areas, such as pages that need to perform better with respect visitor relevance and conversion of a visitor into a sale, prompt to new page views, or as a new lead by filling out a contact form.

Track where visitors came from and where they clicked using Google Analytics.
Google Analytics is essential (and free) website analytics software that shows the number of visitors, the source of your website visitors (website referral, search engine, PPC, Facebook, etc), location of visitors, time spent on each page, and the links they click on.
Real-time reporting for Google Analytics shows you the visitor activity on your website, right now. You can see how today’s new content is attracting visitors, the effects of tweets, and how that new blog post is working for you.
Google Analytics shows you page-to-page navigation, the path visitors take through your site, from entry to exit. You can see which pages perform the best, and what pages require attention.

Find out what your visitors are looking at, how far down the page they scroll, and where they are clicking using Heat Maps from Crazy Egg.
Using eye tracking technology, heat maps show where your visitors are looking, where they are clicking (even when clicking on non-linked items), and how far down the page people are scrolling. Heat maps look like this:

Use their “Confetti Tool” to distinguish all the clicks you get on your site segmented by referral sources, search terms & more. Once you know where your most valuable clicks traffic is coming from, you've uncovered the exact traffic sources that bring high revenue with little effort.
Where Crazy Egg stops, Click Tale picks up with videos of exactly what your visitors are doing, including clicking, mouse movement, and scrolling.

Use “in-page web analytics” to see absolutely everything your visitors do on your webpage with recorded videos of their browsing sessions by ClickTale.
ClickTale allows you to view your visitor browsing sessions as if you where looking over their shoulder. And, with their Form Analytics you can improve your website forms’ performance by finding out which fields are taking the longest to complete, and which are the most likely to prompt your visitors to leave.
Using the recorded movies of your visitor browser sessions will help you make decisions for adjusting webpage elements, content callouts, and messaging.

“Live Chat” on your website allows your visitors to immediately choose to talk with someone live with Olark.
How many times have you visited a website and had some questions but did not want to make a phone call only to chance having a long wait on hold, or needing to leave a message, not knowing when or if your question will be responded to in a timely manner? Now think, how many times did you abandon the site without making a further effort to connect with them?
With live chat, capture interest that you would otherwise lose. Use it to get more leads, and make more sales.

Use an autoresponder to deploy a series of time-released email messages to automatically nourish your leads with Get Response.
Capture more leads with autoresponders by enticing your visitors with an informative series of messages, or a "Free Course” consisting of several emails that are sent on a pre-defined time schedule. You can also use autoresponders to automatically follow-up with leads who completed a form, providing them with further information about your products or services.
GetResponse’s autoresponder campaigns are easy to set up and manage, they also have live phone support.

Conduct multivariate and A/B performance tests on select pages in your sales funnel using Content Experiments in Google Analytics.
Perhaps the single most important concept to grasp in improving a website or web page’s effectiveness is split testing. Comparing an alternate page that attempts to outperform the effectiveness of your control page. You want to always be trying to outperform your primary landing page or goal.
Google Analytics Content Experiments gives you a way to analyze the effectiveness of a landing page, a page along the goal funnel, your goal page by comparing multiple versions to see which performs best.