IE 8 makes it simple to create great add on experiences for users. Specifically, a site can provide web slices, accelerators and visual search. If you want to learn more about these features look here.
I have heard a number of stories where people have written an add ons for IE 8 but then they have trouble posting them to the site http://ieaddons.com. In this post I will step you through the process so you can quickly make your add on available for download.
If you already have an account created you can just click the Sign In link in the upper right corner and enter your credentials.
Once you are logged in you will see your login ID in the upper right corner. Click that link and you will go to a page with an Upload Now button. Click that button and it will bring up a form. You need to fill out each of the fields so that your add on will be displayed in the gallery and available for download from the site. In the following section I will try to map each field to how it is displayed when the add on is displayed on the site and also provide some guidance on the kind of information expected. Once you submit your add on it goes through a review with some Microsoft personnel. If they find any of the fields lacking they will go to your homepage and look for more information.
The following screenshots show you how the fields you entered are displayed.
I hope this provides clarity for those that need it. Take care and start uploading!