shawfactor

Users of membership sites often have and use a membership number. Yet WordPress uses alpha numeric string for usernames for logging in. Why not use both by using the <a href="http://lhero.org/plugins/lh-membership-numbers/" rel="nofollow ugc">LH Membership Number plugin</a>.
LH Membership Numbers allows a user to login by typing in their membership number. Their membership number is the unique user ID that every user is assigned in the database. Optionally administrators can assign a prefix to the membership number (eg for my sports league <a href="https://princesparktouch.com/" rel="nofollow ugc">princesparktouch.com</a> it is PPT). That prefix can make the number far more unique (globally).

LH Membership Numbers

yesim the plugin author but this plugin works perfectly as described (it is a very simple plugin so it is not for everyone).

Don't be f-wit like bgtbbox (the last reviewer), read what it does and if you don't think it works a specified put something in the support forum and I'll look at it.

Works perfectly

Plugin to allow users to login by a number, their user ID (optionally prefixed)

silencecm

Generate Twitter meta tags for your standard WordPress posts automatically. 
To configure which type of twitter card the plugin will generate, visit the plugin settings page. 
More information about Twitter Cards can be Found <a href="https://dev.twitter.com/docs/cards" rel="nofollow ugc">Here</a>.
The current supported types of twitter cards are: 
* Summary Card 
* Large Image Summary Card 
* Photo Card 
* Gallery Card 
* App Card
<h3>Instructions for Use</h3>
Twitter Account:
Update your WordPress profile by adding your Twitter username in the WordPress User Profile Screen. 
Each Twitter card generated will automatically be updated with the Twitter account associated with the WordPress user.
Card Type:
In the settings of the plugin, choose the type of Twitter Card to generate. 
Follow the instructions below for your desired card type:
Summary Card:
<ul>
<li>The post title will be used as the title, and the post excerpt (max 200 characters) will be used as a description.</li>
<li>The featured image of the post will be used as the thumbnail.</li>
<li>If the post does not have a featured image, the image in the plugin settings will be used.</li>
<li>If no image is set (featured or settings) no image will appear, and the Twitter Card may not work correctly.</li>
<li>The image used must be larger than 60×60 px in size.</li>
<li>When setting a default image in the settings screen, images from the WordPress media library 
will be listed. To add images to choose from, upload them to the WordPress media library using the main menu.</li>
<li>Images larger then 1MB are not supported.</li>
<li>Animated GIF’s are not supported.</li>
</ul>
Large Image Summary Card:
<ul>
<li>The post title will be used as the title, and the post excerpt (max 200 characters) will be used as a description.</li>
<li>The featured image of the post will be used as the thumbnail.</li>
<li>If the post does not have a featured image, the image in the plugin setting will be used.</li>
<li>If no image is set (featured or settings) no image will appear, and the Twitter Card may not work correctly.</li>
<li>The image used must be a minimum of 280px wide, and 150px high.</li>
<li>When setting a default image in the settings screen, images from the WordPress media library 
will be listed. To add images to choose from, upload them to the WordPress media library using the main menu.</li>
<li>Images larger then 1MB are not supported.</li>
<li>Animated GIF’s are not supported.</li>
</ul>
Photo Card:
<ul>
<li>The post title (optional) will be used as the title, and the post excerpt (max 200 characters) will be used as a description.</li>
<li>Twitter will automatically resize images to the following sizes: Web: maximum height of 375px, maximum width of 435px, Mobile (non-retina displays), maximum height of 375px, maximum width of 280px, Mobile (retina displays): maximum height of 750px, maximum width of 560px</li>
<li>The image must be a minimum of 280px wide, and 150px high.</li>
<li>Images larger then 1MB are not supported.</li>
<li>Animated GIF’s are not supported.</li>
</ul>
Gallery Card:
<ul>
<li>The post title will be used as the title, and the post excerpt (max 200 characters) will be used as a description.</li>
<li>The first four images attached to the post will be featured in the gallery card.</li>
</ul>
App Card:
<ul>
<li>This card is designed for websites showcasing specific mobile applications for iOS and Android.</li>
<li>If you use this card, each tweet will feature the pointed application.</li>
</ul>
Twitter Validation:
Your Twitter Card must be validated by Twitter in order to work correctly. 
You can test and validate your Twitter Card using the <a href="https://dev.twitter.com/docs/cards/validation/validator" rel="nofollow ugc">Validator</a>

Twitter Card Generator

Generate Twitter meta tags for your standard WordPress posts automatically.

LH Membership Numbers vs Twitter Card Generator