Matthew Horne

Adds social media below your wordpress posts with defered Javascript for improved performance. 
Includes Twitter, Facebook like, google plus and Digg. This plugin adds the javascript to the bottom of the page and combined in to a single script. 
Styling included within the code so no extra CSS. The plugin is designed to be light and minimal and yet provide you with the same results as other social media plugins.

Social Media with defered Javascript

Adds Facebook Like, Twitter button, Google +1 and Digg button below posts.The javascript is defered so to improve performance on your site.

Daniel Westermann-Clark

By default, WordPress network usernames cannot contain anything but lowercase letters and numbers. This plugin adds network options to let you include hyphens, underscores, or uppercase letters, if desired.
Furthermore, this plugin gives you the option to allow email addresses as usernames, or to allow all-numeric usernames (e.g. “1234”).
Finally, this plugin lets you override the minimum length for usernames (which defaults to four characters).
To follow updates to this plugin, visit:
https://danieltwc.com/
For help with this version, visit:
https://danieltwc.com/2011/network-username-restrictions-override-1-0/

Network Username Restrictions Override

Does what it says!

Override restrictions on WordPress network usernames.

Social Media with defered Javascript vs Network Username Restrictions Override