
Effective search engine optimisation can make a site more crawlable and make individual pages more accessible and easier to find. Search engine optimisation includes things as simple as keyword research to ensure that the right words are on the page, not just industry jargon that normal people will never type.
“White hat” search engine optimisation aims to improve the usability of a site, help create great content, or make sites faster, which is good for both users and search engines. Good search engine optimisation can also mean good marketing: thinking about creative ways to make a site more compelling, which can help with search engines as well as social media. The net result of making a great site is often greater awareness of that site on the web, which can translate into more people linking to or visiting a site.
The opposite of “white hat” SEO is something called “black hat webspam”. In the pursuit of higher rankings or traffic, a few sites use techniques that don’t benefit users, where the intent is to look for shortcuts or loopholes that would rank pages higher than they deserve to be to be ranked. There are various methods from keyword stuffing to link schemes that attempt to propel sites higher in rankings.
The follow is Google’s comments regarding the algorithm updates:
In the next few days, we’re launching an important algorithm change targeted at webspam. The change will decrease rankings for sites that we believe are violating Google’s existing quality guidelines. We’ve always targeted webspam in our rankings, and this algorithm represents another improvement in our efforts to reduce webspam and promote high quality content. While we can’t divulge specific signals because we don’t want to give people a way to game our search results and worsen the experience for users, our advice for webmasters is to focus on creating high quality sites that create a good user experience and employ white hat SEO methods instead of engaging in aggressive webspam tactics.
It is difficult to see what effects this will have at this early stage and if the rankings of websites using white hat methods will be effected.