Google announced that they are shutting down iGoogle, Google Video, and three other services. According to my Google Analytics reports, iGoogle is still very popular with readers of Free Technology for Teachers. If you're an iGoogle user who will be looking for a new start page, my suggestion is to try Symbaloo.
Symbaloo allows you to bookmark your favorite websites and arrange them into tile boards that you can share or keep private. Symbaloo calls the tile boards webmixes. You can create multiple webmixes arranged according to topics of your choosing. Symbaloo offers a free iPhone app and a free Android app that you can use to access your webmixes anywhere.
Applications for Education
Symbaloo does offer an education version, but the education version is not free except for individual use which doesn't make it different than signing up for a regular Symbaloo account. Symbaloo can be good for organizing a set of resources to share with your students or colleagues. You could also have students create their own Symbaloo accounts and create webmixes around topics that they are researching.