Related tag is a new feature added by Infolinks. Related tag feature can increase your earnings and clicks while adding valuable informational within your website contents.
The Infolink will chose the best key words for the page and display them as tags within the related Tag cloud.
To add Infolinks related tag code in your blogspot blogs you need to do the following.
Log-in to your blogger account. on your dashboard click design button.
Now Click on Edit HTML tab.
Before changing any code please backup your code.
Check the check-box (Expand widget templates)
Copy the Code : <input type="hidden" name="IL_RELATED_TAGS" value="1"/>
Simply add the tag to the page code where you want the related tags cloud to appear. Like If you want to add the related tag rite under your website heading as in my case place the code under the </header>.
And with in a minute related tag cloud will appear on your website.
Example of my page:
The tag requires the Infolinks script to be integrated in the page; the script will identify the tag in the code and insert the related tags.
Good Luck