What Is Google LSI(Latent Sematic Linking) and How do you use it
It has been known for google to put more weight on lsi indexs, and back links. LSI algorithim through Google checks the topic of a page, and checks to see what words are more relevant to one and another, this is good way of writing articles is to use many relevant words as an lsi effect, it will bring your main keywords up in density, and if done properly higher serps with blogs, articles, and more weight towards your keywords in anchor text.
Another thing is when using lsi techniques as an seo, try it in your back links too, and use relevant keywords in your anchor text, the lsi algo through Google will put more weight to your keywords, and give you more credibility, if you would like to find out some lsi words, or relevant words for stemming a link, or page.
Go to Google, and type in ~seo, now all highlighted or bold words you see are semantically relevant, and you can use these as an LSI technique, which Google has been known to weight keywords more, and pages when using this technique, plus it looks more natural then stuffing keywords of course.
To learn more about stemming, and lSI techniques check the following below