What effect is Google Instant going to have on PPC and SEO - The Best SEO Podcast Number 75

Google Instant counts an impression in two ways: if a user clicks on any ad that appears during partial typing, all results shown up to that point count as impressions, or if results are displayed for at least three seconds without further typing, that also counts as an impression, likely raising overall impression totals.

Yes, according to this episode. Because Google Instant can generate multiple impression events for a single search query as each letter is typed, total impressions rise while clicks may not increase proportionally, causing click-through ratios to fall below previously expected benchmarks like 3 percent.

Possibly. The autocomplete suggestion dropdown in Google Instant can block the top sponsored ad positions, so position four, which sits below the dropdown, may deliver better visibility and ROI at lower cost than the historically prized positions directly above organic results.

A pingback is a way for a blog owner to know that a link to their blog has been shared, either in a post or in comments. When one blog links to another, both owners are notified and links are shared between the two blogs.