I think adword in Image is going well, specially flash ads. But lets know which size of ads for image is going well, I guess 468X60 is going good. If we show it on the Top of the page. any how, if someone have a good experience please share it here for public. Thanks.
Text every time I would say - but then if you're something like a design company or a video production company an image might give you more appeal in the first instance. I guess run the two campaigns separately and see which one performs!
Search engines will not pick up on keywords contained in image files themselves - they can't see them. Your image files should be exclusively targeted to the end user, your customer with little regard to SEO. Now, the ALT tags are different...this is where your keywords belong for image tags. When search engines crawl your websites they will pick this up and use them to determine relevancy and all that. For example if I were selling autographed baseballs and the image was a picture of a baseball with Babe Ruth's autograph, I would use an alt tag: "Babe Ruth Autographed Baseball". That will get picked up in search engines by their robots and if you do not have your images blocked with the robots.txt file, that alt tag is included in the image search in Google.
True, that is good for the public relations/customer relations area. It will not figure in page rank or search engine positioning much unless it's getting a lot of CTR. However, in the area of effectiveness, the most effective position where I am making my money on ads is centered at the top right below the header and in the right column in the middle on my website. Ad companies tell you to position them above the fold. This is basically without scrolling down, they should be in full view immediately. Flashy ads are not always effective. They are like pop ups and pop unders. (I HATE HATE HATE THEM!). Now I did not say animated ads. Excessive flashy ads detract from the content of the website and cause your bounce rate to go sky high. (Bounce rate is defined by Google as the percentage of visitors who leave the website from the same page they entered - landing page.) It's like plating a box in 18k gold leaf when you are only trying to sell trash bags. Watch the overkill, which turns into bounce rates. Basic rule is they should be in immediate line of sight without scrolling down as soon as the visitor opens the webpage. I relegate the ad positions down lower for the lower paying ones and banner ad exchanges, statistics and other items. Your ad companies will try to push popups and popunders. I have those blocked and users of MCIE and Firefox are getting smart to doing that. I would avoid those type of ads. They are annoying and you will get a very low CTR rate with them.