Mainly Groovy on Grails, with some plain old fashioned Java here and there. Will probably be exploring some possible usage of Clojure or Scala in the near future.
Javascript and Node.js
Wordpress - for content management stuffs
CodeIgniter - web app development
Javascript, jQuery for interactivity and AJAX
Plain old PHP, MySQL, Javascript and AJAX.
Mainly CodeIgniter for PHP and some Node.
Python, Django and GAE.
Depending on the site, Ruby, Drupal or WordPress.
Python, Flask, Javascript (including Node.js)
Ruby on Rails
hmm i think you should try google trends to see which is the most best language for web development that is trending.
Not really. If you're doing something nobody else does, maybe the best tool for it is something nobody else uses.