Hi Jarno

When a title parameter is added to a tag most browsers will render it as a tooltip when the mouse is hovered over it. So there's a neat (if possibly annoying) feature of it. Furthermore some CMS applications like to flag everything up with a title when they are shown in Edit mode as content blocks.

When it comes to SEO I'm not aware of it being used by Google for anything other than an IMG or A tag. Happy to be proven wrong though!

Rich

It's a way of controlling the link power from a site. They're passing on the link juice to you.

If you want the search engines to see that link on the external blog, then what they have done is a good thing. They could have also just left that parameter out altogether.

People can put rel="nofollow". This means "don't pass link juice". You could interpret it as a directive to the world that whilst you are providing the link to the site, you don't endorse it.

From Google:

"Nofollow" provides a way for webmasters to tell search engines "Don't follow links on this page" or "Don't follow this specific link."

http://support.google.com/webmasters/bin/answer.py?hl=en&answer=96569