Much the same as the world's business sectors, data is influenced by free market activity. The best substance is what does the best occupation of providing the biggest interest. It may appear as a XKCD comic that is providing geek jokes to a huge gathering of technologists or it may be a Wikipedia article that discloses to the world the meaning of Web 2.0. It tends to be a video, a picture, a sound, or content, however it must supply an interest so as to be viewed as great substance.
Great substance is linkable:
From a SEO point of view, there is no contrast between the best and most exceedingly awful substance on the Internet on the off chance that it isn't linkable. In the event that individuals can't connection to it, web indexes will be in all respects far-fetched to rank it, and thus the substance won't direct people to the given site. Shockingly, this happens significantly more regularly than one may might suspect. A couple of instances of this include: AJAX-controlled picture slide appears, content just available in the wake of signing in, and content that can't be repeated or shared. Content that doesn't supply an interest or isn't linkable is awful according to the web search tools—and in all probability a few people, as well.
From: A Visual Guide to Keyword Targeting and On-Page SEO
Title labels are the second most critical on-page factor for SEO, after substance. You can peruse more data about title labels here.
Alongside brilliant inner connecting, SEOs should ensure that the classification chain of command of the given site is reflected in URLs.
Coming up next is a genuine case of URL structure: