The overall ratings of nine internet and web service stocks are down on Portfolio Grader this week. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

RetailMeNot, Inc. (SALE) ratings are on the decline this week as the company earns an F (“strong sell”). Last week, it received a D (“sell”). SALE also rates an F in Portfolio Grader’s specific subcategory of Earnings Growth. As of Feb. 18, 2015, 11.6% of outstanding RetailMeNot, Inc. shares were held short. The stock currently has a trailing PE Ratio of 33.50. For more information, get Portfolio Grader’s complete analysis of SALE stock.

Slipping from a D to an F rating, Marin Software, Inc. (MRIN) takes a hit this week. The stock gets F’s in Equity and Cash Flow. To get an in-depth look at MRIN, get Portfolio Grader’s complete analysis of MRIN stock.

This week, Unwired Planet, Inc. (UPIP) falls to a D (“sell”), worse than last week’s grade of C (“hold”). Unwired Planet develops patents that allow mobile devices to connect to the Internet. The stock gets F’s in Earnings Revisions and Equity. For more information, get Portfolio Grader’s complete analysis of UPIP stock.

This week, Bankrate, Inc. (RATE) drops from a D to an F rating. Bankrate owns and operates an Internet-based consumer banking and personal finance network. The stock gets F’s in Earnings Surprise and Margin Growth. The stock has a trailing PE Ratio of 191.30. To get an in-depth look at RATE, get Portfolio Grader’s complete analysis of RATE stock.

Blucora, Inc. (BCOR) gets weaker ratings this week as last week’s D drops to an F. Blucora provides white label search and monetization solutions to Web publishers worldwide. The stock gets F’s in Earnings Momentum, Earnings Revisions and Sales Growth. Shares of the stock have been trading at an exceptionally rapid pace, up threefold from the week prior. For more information, get Portfolio Grader’s complete analysis of BCOR stock.

iPass’ (IPAS) rating weakens this week, dropping to an F versus last week’s D. iPass offers enterprise mobility services on a global basis by providing services that simply, smartly and openly facilitate network access from mobile devices while providing the enterprise with visibility and control over their mobile ecosystem. The stock receives F’s in Earnings Revisions, Equity, Cash Flow and Sales Growth. To get an in-depth look at IPAS, get Portfolio Grader’s complete analysis of IPAS stock.

This week, Velti’s (VELT) rating worsens to an F from the company’s D rating a week ago. Velti is a global provider of mobile marketing and advertising solutions. The stock gets F’s in Earnings Growth and Earnings Momentum. For more information, get Portfolio Grader’s complete analysis of VELT stock.

The rating of Demandware, Inc. (DWRE) slips from a C to a D. Demandware provides a software-as-a-service e-commerce solution. The stock also gets an F in Equity. As of Feb. 18, 2015, 12.4% of outstanding Demandware, Inc. shares were held short. Shares of the stock are being traded at a very rapid pace, up 561.4% from the week prior. To get an in-depth look at DWRE, get Portfolio Grader’s complete analysis of DWRE stock.

Angie’s List, Inc. (ANGI) earns an F this week, falling from last week’s grade of D. Angie’s List engages in collections of consumer reviews on local service providers ranging from home improvement to healthcare. The stock also gets an F in Cash Flow. As of Feb. 18, 2015, 14.4% of outstanding Angie’s List, Inc. shares were held short. Shares of the stock have been changing hands at an unusually rapid pace, up 16303.3% from the week prior. For more information, get Portfolio Grader’s complete analysis of ANGI 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.