Google is to make changes to its just-released Buzz social networking service in response to concerns about privacy.
Buzz critics have complained there is too little control over who can follow users and there is no way to block people who do not have public profiles.
They have also claimed their contacts were being made public without their knowledge and that the checkbox for choosing not to display information about contacts is too hard to find.
In the light of the feedback, Google will be rolling out changes to the Buzz service in three main areas, said Todd Jackson, product manager, Gmail and Google Buzz, in a blog post.
According to Jackson, Google will add a more visible option to not show followers or the people users are following on their public profile, plus functionality to allow users to block anyone who starts following them, and will provide greater clarity on which followers and people being followed can appear on users' public profiles.