If you are programming for Android then you know how hard is to create and manage all that icons for different screen sizes and resoultions. Here is GIMP script for creating all that icons at once. 

See how to integrate Google AdSense code with your DotNetNuke 6 site.

If you want to change site icon in DNN search box here is the easiest solution I found.

Depending of your DNN version you need to replace one of the following files:

DNN 6.0.0 /Images/Search/dotnetnuke-icon.gif
DNN 6.0.1 /icons/sigma/DnnSearch_16X16_Standard.png

So you need to create 16x16 image for your site, save it as gif or png image and replace existing files.

Uh, I want to hide header displayed in some of the blog modules. So after spending an hour, I finally found the way how to hide it.

When you are logged as an admin, and you are in edit mode, move the mouse over Manage button in the upper left corner of the module, and from the menu select Edit module

Select page Page Settings and uncheck Display Container option or under Module Container option choose container type which does not display header. In standard DarkKnight DNN theme this container type is: Host: DarkKnigth-Invisible

It's easy when you know what to do, but sometimes it's hard to find what you are looking for.

Today, I just installed DNN blog module.

I am still confused about using DNN but hope that this will change in the next few days :)