From All Points Blog. Read down into the original posting to see speculation as to why. Perhaps “user mapping fatigue”?
We have discontinued the A9 Instant Reward program, and the
A9 Toolbar and personalized services such as history, bookmarks, and
diary. To get help uninstalling your A9 Toolbar, visit toolbar.a9.com.
We have also discontinued A9 Maps and the A9 Yellow Pages (including
BlockViewâ„¢).