Tricks of the trade, definitely not! Hiding SEO keywords is a trick that people for years have used to attract attention from Google and other major search engines. They will hide or shrink the keywords hoping that Google will not notice the stuffing and index their web pages.
Hiding and shrinking SEO keywords is not smart. Usually someone hiding keywords will also stuff keywords that have nothing to do with the main theme of their website into their web pages. Hiding is the process of stuffing the keywords into a large amount of web content and then hiding them so that the users cannot see the keywords. But they are not hidden from the crawlers on …