Web search is one of the most powerful tools we have today. Just like you, people from all walks of life use Google to find solutions, learn new things and understand the world around. One of those new things may be determining whether SEO vs SEM is best for your business. Whether you’re an online business or a local business, chances are that people are actively looking for you.
Additionally, knowing how your SEO is performing can help you make the necessary changes over time to keep your rankings high. Look around for a keyword tracking tool to help you track how your SEO is performing. It’s typical for your ranking to fluctuate from week to week and even day to day. Look for a general upward trend from month to month that shows that your efforts are successful.
Search engines use complex mathematical algorithms to guess which websites a user seeks. In this diagram, if each bubble represents a website, programs sometimes called spiders examine which sites link to which other sites, with arrows representing these links. Websites getting more inbound links, or stronger links, are presumed to be more important and what the user is searching for. In this example, since website B is the recipient of numerous inbound links, it ranks more highly in a web search. And the links "carry through", such that website C, even though it only has one inbound link, has an inbound link from a highly popular site (B) while site E does not. Note: Percentages are rounded.

Second thing, optimizing across additional platforms. So we've looked and YouTube and Google Images account for about half of the overall volume that goes to Google web search. So between these two platforms, you've got a significant amount of additional traffic that you can optimize for. Images has actually gotten less aggressive. Right now they've taken away the "view image directly" link so that more people are visiting websites via Google Images. YouTube, obviously, this is a great place to build brand affinity, to build awareness, to create demand, this kind of demand generation to get your content in front of people. So these two are great platforms for that.
In March 2006, KinderStart filed a lawsuit against Google over search engine rankings. KinderStart's website was removed from Google's index prior to the lawsuit and the amount of traffic to the site dropped by 70%. On March 16, 2007 the United States District Court for the Northern District of California (San Jose Division) dismissed KinderStart's complaint without leave to amend, and partially granted Google's motion for Rule 11 sanctions against KinderStart's attorney, requiring him to pay part of Google's legal expenses.[69][70]
Well, yes and no. Sure, you can get hit with an algorithm change or penalty that destroys all your traffic. However, if you have good people who know what they are doing, this is not likely to happen, and if it does, it is easy (in most cases) to get your visits back. Panda and Penguin are another story, but if you get hit by those it is typically not accidental.