Since no one cares about dial-up accounts and walled-garden AOL content anymore, it was time for a corporate rethink over at AOL.

Now it's been a year since Time Warner revamped the venerable ISP to focus on online advertising. "Wall Street approves so far but wants more proof the turnaround is for real," writes Paul R. La Monica, CNNMoney.com editor at large.

As the story points out, aside from buying behavioral targeting firm Tacoda, AOL bought mobile advertising firm Third Screen and German online ad serving company Adtech this year. That's all on top of last year's purchases of online video ad firms Truveo and Lightningcast and the 2004 purchase of Advertising.com.

Check-up time for AOL [CNNMoney.com]