Not long ago, the good guys at Shopify released the Liquid template gem. Now we have JavaScript alternative of the parser to play with. https://github.com/tchype/liquid.js
DataMapper is the the second most popular Ruby ORM, right after Rails' ActiveRecord. Take a look at the new features in the upcoming 2.0 version. http://solnic.eu/2012/01/10/ruby-datamapper-status.html
Collection of useful tips and tricks about optimizing your jQuery code. http://24ways.org/2011/your-jquery-now-with-less-suck
Learn how to organize your code better and avoid da clutter of excessive code nesting. http://eflorenzano.com/blog/2012/01/01/reducing-code-nesting/
Need a quick HTML 5 hint? Just print this poster and pin it close to your desk. http://www.xhtml-lab.com/html5poster