Latent Semantic Indexing (LSI) – a new concept of Google has been pioneered for SEO purpose. Originally, used for Google Adsense purpose, this program used to determine which Adverts are most relevant to a site.
In basic and non-mathematical term, LSI is the ability of search engines to look for websites on the internet in the same way as a human would. Search engines are now going to tab on relevance and quality rather than just keywords and links for page-ranks. Keywords and links are the traditional ways of ranking sites by search engines. But now LSI is found to be better as the previous method is full of weaknesses.
LSI is going to be useful to structure and build web pages authentically. Its algorithm works well as websites are first scanned for relevant keywords and then compared for relevant relationships that connect them with other sites. LSI also goes far to check grammar, spelling, terminologies and the likes. It checks the overall theme of a website and matches the keywords that are being used.
Previously with keywords and links even irrelevant sites found good ranking in search engines. Many sites just kept on adding new links to make money from more traffic and Adsense. So many visitors became victims of these sites as they found a place in Google top rankings. For this very reason many good websites had to suffer. Google is now doing everything possible to get irrelevant sites off its ranking. In its commitment to create a cleaner and high quality internet experience, the LSI has been introduced.
LSI has a human instinct and can differentiate relevant sites from the irrelevant ones. With the launch of LSI, websites will no longer get promoted if they are stuffed with keywords and irrelevant content. Only optimization based on ethical grounds and sound principles are recognized and only such websites are able to gain a top position on search engine rankings.
