about.com adheres to the ad size guidelines published by the Internet Advertising Bureau and C.A.S.I.E. Specifically we accept the following ad banner sizes with plans to offer more in the near future:

 Full Banner (468x60)

 Button (120x60)

1. We accept gif and gif89 (animated gif) 468x60 banners. We also allow the ad to cycle/flash continuously or as many times as the ad creator wants, as long as the byte count remains under 10K.

2. Javascript Ads. We are still in trial mode, but we can run them as long as they work in our pages. We do need one week lead time. However, we cannot record click-throughs with javascript ads.

3. We can run HTML ads as long as they do not require or link to any CGI code or extra programming. We can run them as long as they work in our pages. We need one week lead time. We are unable to record click-throughs with HTML ads.

4. We do not run Java Ads, or ads with Shockwave, audio or other plugins. Our concern is that they work with too few browsers at this time and we don’t want to disappoint or frustrate our customer base.

5. We are quite willing to TRY most things. If the agency or advertiser wants to test something new, we will certainly attempt to accommodate their request. As the Net evolves, we will add technologies as they are proven and penetrate our customer base.