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.

Support.com, Inc. (NASDAQ:SPRT) is making progress this week as its rating of C (“hold”) from last week increases to a B (“buy”) rating this week. Supportsoft provides software and services in both consumer and enterprise segments. In Portfolio Grader’s specific subcategories of Earnings Revisions, Earnings Surprise, and Sales Growth, SPRT also gets A’s. The stock has moved up a slight 2.5% over the past week. For more information, get Portfolio Grader’s complete analysis of SPRT stock.

Demand Media, Inc. (NYSE:DMD) is seeing ratings go up from a C last week to a B this week. 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.

This is a strong week for Yelp (NYSE:YELP). The company’s rating climbs to B from the previous week’s C. Yelp!, Inc. hosts an online database of user-generated reviews of local businesses. The stock price has risen 19.6% 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 YELP 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.