but the text http://gdymov.com/inbound-links-backlinks-wordpress-plugin/ does not actually appear on the page. So, where did Google get this text? When I examined the source, I found that the ‘title’ attribute of the link contains this text. Thus, this proves that google indexes the content in the <a title='’ attribute
I think it can have some advantages but the recommendation could be not using the exact title as the anchors because many times, when you hover your mouse pointer over the links, like while looking at the Wikipedia pages, the titles are different from but relevant to the anchors used and set up actually and so, yes they can be helpful.