A Catalyst Group study showed that searchers mostly liked Bing’s search interface and results over Google, but would not leave Google because they were familiar with it. TechCrunch covered this study first, where the key findings included:

Most searchers liked Bing’s design and organization layout over GoogleUsers felt Bing and Google were equal in returning relevant results, despite the layoutsMost searchers would continue to use Google, even though they liked Bing better

Here is the chart people are showing:

Here is the full PDF of the study:

Catalyst Group Bing V. Google Usability Study –

Forum discussion at DigitalPoint Forums.