There's a plugin for everything huh? You don't need an SEO, there's a plugin for that too.
Now, why would WordPress have a Plugin to remove Title Attributes?
The title attribute is best used to add optional advisory information to a page element. WordPress's default behaviour is to add title attributes to pretty much every link that it can, whether it has advisory information about it to offer or not. For example, links in Page lists, archive menus, and in the default "Recent Posts" widget simply duplicate the link text in their title attributes. This helps no one but hinders some users.
I review quite a few sites on a regular basis. I'm seeing Title Attribute abuse on the rise and it all comes back to WordPress and those who decided to copy what WP users were doing.
Whenever I see it, I think one of two things. It's a Pushbutton SEO, does everything via a Plugin or, the person is attempting to increase keyword relevancy by stacking title attributes with matching anchor text, attribute spamming. Bad Webmaster, Bad!
Does Your Website Stutter?
Here's a previous topic that gets into the details of using the Title Attribute. All you WordPress freaks need to install that Remove Title Attributes Plugin before we end up with a stuttering stuttering web web!
The Title Attribute How do you use the Title Attribute correctly? 2008-03-11 - [WebmasterWorld.com...]
Nice one. It's often grated a little, but I never looked for a way to deal with it.
It can be even worse with image links. When WP auto-generates an ALT attribute, it usually doubles that in the TITLE attribute, and it's often grabbing that text from some caption or image title, and then the surrounding link can end up with a very similar TITLE attribute as well which means that it's tripling, or quadrupling, up.