Views field: how to add html 'title' attribute to link
This will add title attributes to most links, depends with some modules though.

/**
 * Add title attribute to any link that doesnt have a title already
 */
function YOURTHEME_preprocess_link(&amp;$vars) {
    // If title set and not empty dont do anything
    if (isset($vars['options']['attributes']['title']) &amp;&amp; !empty($vars['options']['attributes']['title'])) {
        return;
    }

    // Use the link text as the title
    $vars['options']['attributes']['title'] = strip_tags($vars['text']);
}