Google has modified the Ad Units to decrease accidental clicks.

By allowing users to click only on the ad title and URL, we aim to decrease accidental clicks, better aligning visitor behavior with their intent.
We currently monitor clicks on Google ads for accidental clicks, and the format change complements our monitoring system by further ensuring advertisers only pay for meaningful clicks. By reducing accidental clicks, we hope to increase advertiser campaign value and satisfaction, encouraging additional spend and facilitating higher monetization for all publishers.
Searchenginewatch Forums held a poll and these are the results :

Source : forums.searchenginewatch.com
Here’s a snapshot of the video ads unit available for youtube video publishers.

More at Official Google Blog
Enhance your site with high quality, relevant video content from YouTube partners, and earn extra revenue along the way….
That’s the whole idea of Google.
YouTube now offers website publishers to create a custom video player and add their adsense code to deliver targeted ads atop the video being played. Web Publishers can also choose the category of video to be shown, or let Google automatically target ads based on the content. The text-based ads would be shown above the video player, which can also be customized to match the look and feel of the publisher’s website.

At the time of writing this post, this feature is available only for a select few registered YouTube users.
You’ll need to sign up for an AdSense account to start using Video Units.
More Info on YouTube
Google has added a new feature in Adsense, called the ‘allowed sites’ option. This can be found under Adsense Setup Tab.

If enabled, only the sites specified by you are allowed to display Google ads for your account.
This would prevent inappropriate sites from copying your Adsense codes and placing it on their site, with the intention of getting you banned off Adsense.
The latest Click Fraud Index from Click Forensics, which is out today, says that the fraudulent click rate is on the rise.
Key findings from data reported for Q2 2007 include:
- The overall industry average click fraud rate was 15.8 percent for Q2 2007. This is an increase from 14.1 percent for the same quarter in 2006 and 14.8 percent for Q1 2007.
- The average click fraud rate of PPC advertisements appearing on search engine content networks, including Google AdSense and the Yahoo Publisher Network, was 25.6 percent. That’s up from 21.9 percent for Q1 2007 and 19.2 percent for Q4 of 2006.
- Traffic from botnets doubled from Q1 to Q2 2007 and contributed significantly to the increase in click fraud rates.
- In Q2 2007, the greatest percentage of click fraud originating from countries outside North America came from France (5.1 percent), China (3.2 percent) and Australia (3 percent).

The report says that growing use of botnets is making the problem worse, with traffic from botnets doubling between Q1 and Q2.
Tom Cuthbert of Click Forensics said:
“A significant percentage of today’s click fraud traffic can be attributed to two growing areas of concern for search advertisers – traffic that comes from botnets and from parked domains or made-for-ad sites.
“Advertisers running campaigns on content networks are especially vulnerable as they are increasingly targets of this growing pool of savvy fraudsters.”
SOURCE : ClickFraudNetwork