This week, the overall grades of 11 Internet Software & Services stocks are lower, according to the Portfolio Grader database. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

Baidu, Inc. Sponsored ADR Class A (BIDU) is having a tough week. The company’s rating falls from a C to a D. Baidu, Inc. Sponsored ADR Class A is a Chinese-language Internet search provider. The company also gets F’s in earnings momentum. For more information, get Portfolio Grader’s complete analysis of BIDU stock.

VeriSign, Inc. (VRSN) experiences a ratings drop this week, going from last week’s C to a D. VeriSign, Inc. provides Internet infrastructure services to various networks worldwide. For more information, get Portfolio Grader’s complete analysis of VRSN stock.

Slipping from a C to a D rating, SPS Commerce, Inc. (SPSC) takes a hit this week. SPS Commerce, Inc. provides on-demand supply chain management solutions through an online hosted software suite. For more information, get Portfolio Grader’s complete analysis of SPSC stock.

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

Sohu.com, Inc. (SOHU) slips from a D to a F this week. Sohu.com, Inc. is an Internet media company that serves as a daily source of information, communication and entertainment for millions of Chinese consumers. The company also gets F’s in sales growth, earnings momentum, and return on equity. For more information, get Portfolio Grader’s complete analysis of SOHU stock.

Benefitfocus, Inc. (BNFT) gets weaker ratings this week as last week’s C drops to a D. For more information, get Portfolio Grader’s complete analysis of BNFT stock.

This week, Channeladvisor Corporation’s (ECOM) rating worsens to a D from the company’s B rating a week ago. The company also gets F’s in return on equity. For more information, get Portfolio Grader’s complete analysis of ECOM stock.

This is a rough week for Pandora Media, Inc. (P). The company’s rating falls to D from the previous week’s C. Pandora Media, Inc. offers radio stations available to stream on computers and mobile phones. The company also gets F’s in earnings revisions, earnings surprise, and return on equity. For more information, get Portfolio Grader’s complete analysis of P stock.

Angie’s List, Inc.’s (ANGI) rating weakens this week, dropping to a D versus last week’s C. Angie’s List, Inc. engages in collections of consumer reviews on local service providers ranging from home improvement to healthcare. The company also gets F’s in earnings revisions and earnings surprise. For more information, get Portfolio Grader’s complete analysis of ANGI stock.

Marin Software, Inc. (MRIN) earns a F this week, moving down from last week’s grade of D. The company also gets F’s in earnings revisions, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of MRIN stock.

Rocket Fuel, Inc. (FUEL) declines this week from a D to a F. Rocket Fuel, Inc. designs, develops and sells interactive technology solutions. The company also gets F’s in return on equity and free cash flow. For more information, get Portfolio Grader’s complete analysis of FUEL 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.