The grades of three internet and web service stocks are better this week, according to the Portfolio Grader database. Every one of these stocks has an “A” (“strong buy”) or “B” overall (“buy”) rating.

This week, Tucows Inc. (TCX) is making solid headway. The company’s rating improves to an A (“strong buy”) from last week’s B (“buy”) rating. Tucows provides wholesale digital products to Internet service providers and Web hosting companies. In Portfolio Grader’s specific subcategories of Earnings Momentum and Earnings Surprise, TCX also gets A’s. For more information, get Portfolio Grader’s complete analysis of TCX stock.

Support.com, Inc.’s (SPRT) grade is moving up to a B (“buy”) this week from last week’s C (“hold”). Supportsoft provides software and services in both consumer and enterprise segments. For more information, get Portfolio Grader’s complete analysis of SPRT stock.

Demand Media, Inc. (DMD) earns a B this week, jumping up from last week’s grade of C. Demand Media operates as a content and social media company in the United States that identifies, creates, distributes, and monetizes content. Shares of DMD have increased 5.6% over the past month, better than the 1.7% decrease the S&P 500 has seen over the same period of time. For more information, get Portfolio Grader’s complete analysis of DMD stock.

Louis Navellier’s proprietary Portfolio Grader stock ranking system assesses roughly 5,000 companies every week based on a number of fundamental and quantitative measures. Stocks are given a letter grade based on their results — with A being “strong buy,” and F being “strong sell.” Explore the tool here.