Coming also "imminently" but not in a matter of days are Google+ profiles for companies to promote their products and brands, Gundotra said, adding that the company was "overwhelmed" by the level of interest for this.

Another feature Google+ will eventually gain is the ability for users to set up profiles using pseudonyms. Currently, Google+ members must use their real names, a policy that has been criticized by many who feel that anonymity is sometimes justified on the Web.

Asked about a blistering and embarrassing memo that a Google engineer inadvertently posted publicly on Google+ criticizing the site harshly, Gundotra acknowledged that the incident was unpleasant and hurtful to him and the rest of the Google+ team.

The engineer, Steve Yegge, called Google+ "a knee-jerk reaction, a study in short-term thinking" in large part because it lacks a strong developer platform.

Gundotra said that, internally, Google fosters a culture in which employees are encouraged to be open with their opinions and critical of the company's efforts, so the content of Yegge's memo wasn't so much the issue as the fact that it was broadcast to the world and reported broadly in the media. "We never like to see that," he said.