axenso

You can enable a tooltip that shows info about user/author when you rollover/click on related avatar.
Let’s speak clearly: if you are loooking for a plugin that enables the standard Gravatar hovercards, this is not the plugin right for you. Please look for another one.
When you rollover/click on an avatar (e.g. of a comment author), a tooltip popups and shows:
<ul>
<li>some additional links if the author is a registered user: e.g. to user post archive, to user external website, to user blog (if multisite)</li>
<li>some info from Gravatar if author is registered to that service: e.g. location, “about me” description, websites, other account pages (facebook, twitter….)</li>
</ul>
In plugin settings you can set up the javascript and css main options.
The plugin comes with some filter hooks, so you can customise the tooltip content at all.
The plugin uses <a href="http://craigsworks.com/projects/qtip2/" rel="nofollow ugc">qTip plugin for jQuery</a>.

Avatar Tooltip

To show a tooltip with info (member info and Gravatar profile) when you mouseover/click on an avatar.

Amin Nazemi

Neatma

Do you need to add tooltips to your forms to enhance communication and messaging on your Gravity Forms? 
Easy Gravity Tooltip makes it easy to do just that!
Easy gravity tooltip features
<ul>
<li>HTML support in tooltip content</li>
<li>Add custom style using class or inline CSS</li>
<li>2 open and close triggers </li>
<li>3 animations </li>
<li>3 themes</li>
<li>2 tooltip positions </li>
<li>Show or hide tooltip icon</li>
<li>Lightweight</li>
<li>Custom CSS</li>
<li>Custom icon</li>
<li>4 open and 6 close triggers</li>
<li>11 animations</li>
<li>Animation duration</li>
<li>Delay before showing tooltip</li>
<li>6 themes</li>
<li>4 tooltip positions</li>
<li>Tooltip box min and max with</li>
<li>Show or hide tooltip arrow</li>
<li>Fully responsive </li>
<li>And more</li>
</ul>
How to use 
1. First build a form (using GRAVITY FORMS) 
2. Add a text or HTML in “Appearance/Tooltip Content” 
3. Save the form and you are done 
4. Now you can see the tooltip in-field label hover at frontend
Notice 
If you want to change appearance of tooltip you can go to “the form/settings/easy tooltip” . 
Make sure you also have Gravity Forms activated (at least v2.0).

Easy Gravity Tooltip

This plugin helps you easily add tooltips to gravity forms (gravity forms tooltips free).

Avatar Tooltip vs Easy Gravity Tooltip