The grades of 3 Internet Software & Services 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.

YY, Inc. Sponsored ADR Class A (YY) earns a B this week, jumping up from last week’s grade of C. YY, Inc. Sponsored ADR Class A operates an online social platform in the People’’s Republic of China. The company also gets A’s in sales growth, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of YY stock.

SouFun Holdings Ltd Sponsored ADR Class A (SFUN) shows solid improvement this week. The company’s rating rises from a C to a B. SouFun Holdings Ltd Sponsored ADR Class A operates a real estate Internet portal, and a home furnishing and improvement website in the People’’s Republic of China. The company also gets A’s in sales growth, earnings surprise, and return on equity. For more information, get Portfolio Grader’s complete analysis of SFUN stock.

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