How To Create Blogger Custom Robot Header Tags ?
What does custom robot header tags do?
The custom robot header tags provide additional directions to the crwaling bot, how to index the page. The best practise is to allow all indexing except archives and search pages. This can be done easily on blogger
Where to find the setting ?
Navigate to blogger button on left--expand the drop down and select settings.
Select settings--and in search preferences, you can find the custom robots header tags with edit on side
When clicked on edit, a window opens and make changes as below
This can improve your SEO score pretty much and results in more income if you have ads enabled in your site by ad providers. This technique was un-revealed to blogger users-Those who used blogger to hoist their site and link to an external domain. This resulted in losing ranks to a lot of users. Any template changes may sometime result in changing the values. So if you made a template change recently, check that it still exists as above diagram
Explanation
The 'all' enabled allows to index all pages in homepage. The 'noindex' tells the crawlers to never index a search or archive page.