Google Instant, now live, is search-before-you-type.

It takes what you have typed already, predicts the most likely completion and streams results in real-time for those predictions—yielding a smarter and faster search that is interactive, predictive and powerful.

Here are a few of the core features in Google Instant:

• Dynamic Results – Google dynamically displays relevant search results as you type so you can quickly interact and click through to the web content you need.
• Predictions – One of the key technologies in Google Instant is that we predict the rest of your query (in light gray text) before you finish typing. See what you need? Stop typing, look down and find what you’re looking for.
• Scroll to search – Scroll through predictions and see results instantly for each as you arrow down.

Here’s a video that explains Google Instant in greater depth: