Three Internet and Web Service stocks are moving up in their overall rating this week, according to the Portfolio Grader database. Every one of these is graded an “A” (“strong buy”) or “B” overall (“buy”).

Facebook, Inc. Class A (NASDAQ:FB) is making headway this week, with the company’s rating improving to an A (“strong buy”) from a B (“buy”) last week. Facebook is a social networking service and website. In Portfolio Grader’s specific subcategories of Earnings Momentum, Earnings Revisions, Earnings Surprise, and Sales Growth, FB also gets A’s. The stock price has risen 8.4% over the past month, better than the 1.3% decrease the Nasdaq has seen over the same period of time. For more information, get Portfolio Grader’s complete analysis of FB stock.

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

The rating of Demand Media, Inc. (NYSE:DMD) moves up this week, rising from a C to a B. Demand Media operates as a content and social media company in the United States that identifies, creates, distributes, and monetizes content. 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.