The grades of eight internet and web service stocks are on the rise this week on Portfolio Grader. Each of these stocks is rated an “A” (“strong buy”) or “B” overall (“buy”).

Commtouch Software Ltd’s (CTCH) grade is moving up to a B (“buy”) this week from last week’s C (“hold”). Commtouch Software provides messaging, antivirus, and Web security solutions to OEM customers, enterprises, and service providers primarily in Israel, North America, Europe, and Asia. In Portfolio Grader’s specific subcategory of Sales Growth, CTCH also gets an A. For more information, get Portfolio Grader’s complete analysis of CTCH stock.

Trulia, Inc. (TRLA) shows solid improvement this week. The company’s rating rises from a C to a B. For more information, get Portfolio Grader’s complete analysis of TRLA stock.

NetEase, Inc. Sponsored ADR (NTES) is progressing from last week’s rating of B (“buy”) as the company improves to an A (“strong buy”) this week. NetEase develops Internet applications, services and other related technologies in China. For more information, get Portfolio Grader’s complete analysis of NTES stock.

58.com Inc. Sponsored ADR Class A (WUBA) is seeing ratings go up from a C last week to a B this week. For more information, get Portfolio Grader’s complete analysis of WUBA stock.

This week, YY, Inc. Sponsored ADR Class A’s (YY) ratings are up from a C last week to a B. YY operates an online social platform in the People’’s Republic of China. For more information, get Portfolio Grader’s complete analysis of YY stock.

LinkedIn Corporation Class A’s (LNKD) ratings are looking better this week, moving up to a B from last week’s C. LinkedIn operates a social networking website used for professional networking. For more information, get Portfolio Grader’s complete analysis of LNKD stock.

This is a strong week for OpenTable, Inc. (OPEN). The company’s rating climbs to B from the previous week’s C. OpenTable provides free, real-time online restaurant reservations for diners through an online booking service. For more information, get Portfolio Grader’s complete analysis of OPEN stock.

Bazaarvoice, Inc. (BV) gets a higher grade this week, advancing from a C last week to a B. Bazaarvoice provides social commerce solutions which enable its clients to capture, display and analyze online word of mouth. For more information, get Portfolio Grader’s complete analysis of BV 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.