3) KWFinder is one of the "newer" kids on the block, but it's probably just about the easiest way I have found to find new long-tail keywords quickly. A couple of things I like about this tool is that it allows me to create lists of keywords. So I can group up my different sites by lists and revisit them at a later date. I can export the data to CSV and start building out campaigns. It also keeps a nice scrolling list of the last 20+ keywords you have looked up. The SEO difficulty indicator comes in very handy as well! As far as ease of use goes, KWFinder wins hands down.
Traffic is a consequential effect of your SEO efforts. If you were able to improve your search visibility for a high volume keyword, you can almost be sure that your site’s traffic count will also increase. However, a drop in an otherwise steady number of traffic does not always mean that your search visibility took a drop as well. Take a look at this example:
Search volume based on trends is ever-changing. Twitter, YouTube and news aggregators are great resources for identifying popular trends. Take advantage of trends in your field as well as trends in business, technology, local, pop culture and world events to promote your product. You can garner significant web traffic by beating your competitors to the punch.
Of all the tools listed in this article, Moz Link explorer is an old one & quite popular. If you want to compare backlinks between two or more domains, Open Site Explorer is worth trying. This tool works best when you have a paid account of SEOMOZ though a free version of this tool is good enough to get you started checking the backlinks of your site and the sites of your competitors.