My main purpose is to modify "the title above". I'm just ordinary man with ordinary blog (xxx.blogspot.com) [free]
I just wonder, could I create 404 Page not Found my self instead of blogger's default 404 page.
The ideas are:
to collect my URLs databases(I think Feed services such as Feedburner have it)
then placing it on <Head> section:
<b:if cond='data:blog.url != "my URLs databases"'>
alert("alert for my 404 Page not Found"
Please for any advice