This plugin adds a shortcode to WordPress with which you can easily display the link to a user's profile.
This plugin involves manual configuration.
In the plugin source code file, there is one configuration variable,
$hh_profileLinkShortcodeURLTemplate, which contains the HTML code template for the profile links. It's a string containing two '%s', the first one gets replaced by the user's login (user_nicename, to be precise), the second one by his/her display name.