As executives continue to stream out of Yahoo following its restructuring last spring, the Web portal's biggest internal critic is still sticking around.

Media researcher Jack Myers recently released his sixth annual "power rankings," of online sales organizations of 129 Web sites based on five attributes, including responsiveness of sales reps and whether organizations deliver on promises. Some 210 marketing and advertising executives were surveyed. Among the findings:

A sure sign of Web 2.0 maturing is the emergence of a new generation of online rivalries. Think Google vs. Viacom, NBC Universal vs. Apple and iVillage vs. Glam Media. Some squabbles are bigger than others, some nastier, but turf battles are breaking out all over the digital landscape. Here, then, a handy fight card for the Web version of the WWF:

Third Screen Media founder and CEO Tom Burgess isn't sticking around to see how AOL's acquisition of the company turns out. In an e-mail message sent out last month, Burgess explained that he planned to leave the mobile ad platform by mid-October and already has "new projects" underway. (He declined to discuss the nature of the projects in a follow-up message.)

Third Screen Media founder and CEO Tom Burgess isn't sticking around to see how AOL's acquisition of the company turns out. In an e-mail message sent out last month, Burgess explained that he planned to leave the mobile ad platform by mid-October and already has "new projects" underway. (He declined to discuss the nature of the projects in a follow-up message.)

Mobile video is on less than 2 percent of cell phones, but some 40 percent of consumers say they'd watch it if it were free. That interest level creates an opportunity for marketers to experiment with ad formats and targeting on mobile video, according to JupiterResearch.

Advertising in video games is no longer a novelty. The emerging category reached a new benchmark last month when Sony Computer Entertainment America launched a new in-game ad unit led by Darlene Kindler.

With Web 2.0 sites awash in video clips, widgets, rich media and avatars, which ones still provide a user-friendly experience? Rohit Bhargava, who writes the Influential Marketing Blog and heads the interactive marketing group at Ogilvy Public Relations Worldwide in Washington, D.C., recently assembled a Top 5 list of sites based on usability. They are:

For countless bloggers laboring in obscurity, capturing and growing an audience is a big challenge. Now Larstan Inc., publisher of the Blogger & Podcaster magazine and Web site, is teaming up with USA Today to create a guide to blogs and podcasts on the newspaper's site.

Millions of people have been sharing their likes and dislikes, hobbies and preferences with the world via their MySpace and Facebook pages. Now, the two biggest social networking sites are aiming to tailor ads based on whether you liked The Matrix or My Chemical Romance or Harry Potter and the Deathly Hallows, or not.