Another reason is that if you're using an image as a link, the alt text for that image will be treated similarly to the anchor text of a text link. However, we don't recommend using too many images for links in your site's navigation when text links could serve the same purpose. Lastly, optimizing your image filenames and alt text makes it easier for image search projects like Google Image Search to better understand your images.
For example, we regularly create content on the topic of "SEO," but it's still very difficult to rank well on Google for such a popular topic on this acronym alone. We also risk competing with our own content by creating multiple pages that are all targeting the exact same keyword -- and potentially the same search engine results page (SERP). Therefore, we also create content on conducting keyword research, optimizing images for search engines, creating an SEO strategy (which you're reading right now), and other subtopics within SEO.
I definitely learned tons of new things from your post. This post is old, but I didn’t get the chance to read all of it earlier. I’m totally amazed that these things actually exist in the SEO field. What I liked most is Dead Links scenario on wikipedia, Flippa thing, Reddit keyword research, and at last, the facebook ad keyword research. Its like facebook is actually being trolled for providing us keywords thinking they are promoting ads.
Content is king. That’s the saying, right? It’s true in a way. Your website is really just a wrapper for your content. Your content tells prospects what you do, where you do it, who you have done it for, and why someone should use your business. And if you’re smart, your content should also go beyond these obvious brochure-type elements and help your prospective customers achieve their goals.