Despite many experts agreeing that search engine optimization (SEO) is critical in marketing a website, many firms struggle with the process. A new report from Conductor further confirms this, finding that online retailers in general have particularly low visibility in SEO ranks.

Conductor’s research tracked the natural search rankings of the 200 most expensive keywords used by retailers. Despite the Internet Retailer 500 spending approximately $1.2 million daily on keywords, only 33 percent of those keywords appeared in the top 50 natural search results. Conductor’s research also found that 93 percent of the Internet Retailer 500 are not ranking above position 50 in natural search results.

Web-based retailers, however, are faring better than traditional brick-and-mortar retailers. Conductor’s research shows that web-based retailers tend to have more visibility and are more active in paid search than brick-and-mortar stores.

Earlier this year, Conductor found the Fortune 500 companies tended to have similar troubles with search engine optimization (SEO). According to the research, Fortune 500 companies are faring even worse than the Internet Retailer 500, with only 25 percent of their keywords appearing in natural searches.