Regarding this:

"You could put verification meta tags in the layout.master file of your skin but I recommend using the alternate verification where you just put a file in the root of the web. To me this is better than adding junk meta data to the content."

I dont have ftp access to a site, i only have access to the mojo cms part of it. How do I upload the webmaster verification files using the Cms alone? There is a 'File Manager' option in the root. But there is no file visible named or called layout.master in it.

I also want to be able to add a custom meta tag of my own saying something like this:

<meta name="SEO-By" content="My name and email address">.

I would like this meta to appear in all the pages of the site.

Thanks I was able to alter/edit the layout.master file to add custom meta site verification and signature tags.