Currently running in Beta test mode, Google are testing video extensions that will be shown with their Adwords ads.

The plan is to have an "expandable plus-box" directly beneath the normal PPC text ad in which video extensions will play. Users will be able to watch the video before deciding whether or not to click-through. This sounds interesting for users, but the current cost of this service for advertisers is less appealing.

Once viewers reach the 10 second mark the advertiser will be charged the same maximum cost per click as if their ad had been clicked, regardless of whether it is clicked. So will this lead to a flurry of 10 second ads or are the search results becoming more and more cluttered, as with Google Preview?

Google has suggested that video extensions could be of particular use for product demonstrations, previews and trailers.

At present, there are no plans to roll this service out in the UK.

Google has now launched “Instant Previews”, which provides a preview of the organic search results without a searcher having to click through to the site itself. These previews appear on the right hand side of the Google search results screen when you click the little magnifying glass icon next to the search results.

This new addition comes hot on the heels of Google's launch of Google Instant. Unlike Google Instant search, Google Instant Preview is by default turned off, the magnifying glass must be clicked to activate this new feature. The preview istself is a graphic overview of a search result that highlights those sections which are most applicable to the search term used making it easier to see whether a site is worth visiting or not.

Google Preview will start showing up from today, 9th November 2010 and should be available in 40 languages and to all users within a couple of days. Google claims that during the testing of Google Instant Preview, those using Instant Preview stated that they were about 5% more likely to be satisfied with the results they clicked. This new visual comparison seems set to change the way visitors evaluate websites and choose whether or not to visit them.

At this point Google Preview doesn't extend to Google Ads, even though every Google Ad ends up at a web page. Google has thought about the option, but isn’t including it in the initial launch. Although incredibly fast and powerful, Google Preview still finds including sites created in Flash difficult with the majority of flash sites not yet being turned into a preview. Unlike Google Instant, which shuts off when your web connection slows, Google Instant Previews is available even on poor internet connections.

With Microsoft Advertising adCenter now providing all paid search results for Yahoo! Search and Bing in the US, and Bing supplying the organic search results for Yahoo! Search, they have just announced that this will be rolled out in select markets across europe and the UK in early 2011.

The european transition will begin with the UK, France and Ireland with all of europe expected to be completed by early 2012.

Current advice is to continue using adCenter as normal but to expect further information regarding the pending changes approximately 3 months prior to any changes taking place.