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

Millennial Media, Inc. (MM) earns an F (“strong sell”) this week, moving down from last week’s grade of D (“sell”). Millennial Media provides mobile advertising solutions for advertisers and developers in the United States and internationally. For Portfolio Grader’s specific subcategory of Earnings Revisions, MM also gets an F. As of Feb. 21, 2014, 12.3% of outstanding Millennial Media, Inc. shares were held short. To get an in-depth look at MM, get Portfolio Grader’s complete analysis of MM stock.

This week, Trulia, Inc. (TRLA) falls to a D (“sell”), worse than last week’s grade of C (“hold”). The stock gets F’s in Earnings Momentum, Earnings Revisions and Earnings Surprise. The stock price has fallen 19.4% over the past month, worse than the 1.7% decrease the S&P 500 has seen over the same period of time. As of Feb. 21, 2014, 18.2% of outstanding Trulia, Inc. shares were held short. For more information, get Portfolio Grader’s complete analysis of TRLA stock.

Conversant Inc. (CNVR) earns a D this week, falling from last week’s grade of C. As of Feb. 21, 2014, 17.2% of outstanding Conversant Inc. shares were held short. To get an in-depth look at CNVR, get Portfolio Grader’s complete analysis of CNVR stock.

Slipping from a C to a D rating, NIC Inc. (EGOV) takes a hit this week. NIC provides Internet-based electronic government solutions. The stock gets F’s in Earnings Momentum and Earnings Surprise. The trailing PE Ratio for the stock is 41.10. For more information, get Portfolio Grader’s complete analysis of EGOV stock.

Spark Networks, Inc. (LOV) experiences a ratings drop this week, going from last week’s D to an F. Spark Networks is a provider of online personals services in the United States and internationally. The stock gets F’s in Equity and Cash Flow. For a full analysis of LOV stock, visit Portfolio Grader.

Slipping from a D to an F rating, iPass (IPAS) takes a hit this week. 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.

Velti (VELT) experiences a ratings drop this week, going from last week’s D to an F. Velti is a global provider of mobile marketing and advertising solutions. The stock gets F’s in Earnings Growth and Earnings Momentum. For a full analysis of VELT stock, visit Portfolio Grader.

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.