Now google allows its user to set up alerts that can cover blogs specifically. User can select news, groups or other web alerts such as comprehensive which covers everything.

On the other hand, segmenting user's sources for information could have some interesting uses - perhaps sending specific information appearing in an existing blog to a person and also the information appearing in Google Group to the other.

                                Earthlink Netscape Netvouz RawSugar Shadows Sphinn StumbleUpon Yahoo MyWeb