The My Sites portlet has menu items for each site. The anchor element for each menu item has a title attribute, but it does not give enough detail to uniquely identify the link.
Accessibility best practices state that, "Users of assistive technology may navigate to and activate links based on the name of the link and not based on the context of the link within content. Providing unique on-screen text or alternative text will ensure that users of assistive technology are able to distinguish different links from each other." https://www.webaccessibility.com/best_practices.php?best_practice_id=644