That's unethical because they deliberately contain only a few lines of HTML text and link deceptive key phrases. They're frowned upon by Search engines and are routinely banned. Information Pages contain information that a client's target audience wishes to read. They're content rich and gives the searcher exactly what they're looking for. Therefore, they work very well with search engines.
Most engines give meta tags little relevance.
Some don't even recognize metas in their algorithms for accessing a rank. Here's a glimpse into the optimization priorities that will help your site get submitted and listed safely, ethically and highly. It also strengthens your position in search engines. Search engines use Directories for part of their positioning algorithms when determining a Web page's placement in their search results. That means your positioning is higher if you're included in the directories.