Removing the blog title

Though this tweak is not recommended, for it hampers the blogger engine's capability to sort and search the blogs, but still you can employ this hack and remove the title.
Login to dashboard and click on Layouts for the blog you wish to remove the title. Click on Edit HTML subtab of Template tab at the top. First backup your template to PC by clicking on Download Full Template link. Then scroll down till you come to the following code :

<div id='header-wrapper'>
<b:section class='header' id='header' maxwidgets='1' showaddelement='no'>
<b:widget id='Header1' locked='true' title='' type='Header'/>
</b:section>
</div>

Change locked='true' to locked='false' in the above code and SAVE TEMPLATE. Click on Page Elements subtab at the top to switch to Layouts view. Click on Edit link in the header Title section. In the new popup window click on Remove Link and confirm it.

NOTE:
The Remove link is not available before you "unlock" the title widget by changing true to false in the code.