"At this time, your new profile does not have all the features and functionality of your 360 profile. However, we are looking at incorporating new ways of expressing yourself through your profile," Daniels wrote. "In regards to uploading multiple photos, your profile on Yahoo allows for only one primary photo for now. This is also something we’re looking at improving/expanding based on your feedback."

launched in March 2005 but never gained the popularity the company expected compared to competitors like Facebook and MySpace. Yahoo 360's failure stands as an example of one of many red-hot Internet opportunities that Yahoo was unable to capitalize on in recent years, as it lost its technology edge and its finances foundered.

In May of last year, Neal Sample, Yahoo's chief platforms architect, told IDG News Service that unifying Yahoo's multiple end-user profiles is a fundamental piece of the Y OS project, which also involves radically opening up the company's sites, online services and Web applications to external developers.

"It's taking the user data and making it centrally available, and therefore available to the user all across the network," Sample said.

"Part of our strategy is to normalize those [multiple] profiles and collapse them into a single place and reduce user confusion. We'll make a single dashboard for them to update their information, and we'll go from looking like 25 different Yahoos with 25 different profiles to one Yahoo and one profile," he added.