############################################################### Suporte pra imagens multi-dimensionais para economizar banda ############################################################### Riloadr (bem completa) https://github.com/tubalmartin/riloadr
jQuery Picture (simples de se aplicar) https://github.com/Abban/jQuery-Picture
Adaptive Images mais completa e recomendada, nao precisa de alteração no html, apenas uma necessidade de PHP e no .htaccess
########################################################### DEMOS DE ICON FONTS utilizados como pequenos icones que permitem alterar em tempo real, propriedades de css.
http://css-tricks.com/examples/IconFont/
Referencias de icon fonts gratuitos :
Glyphicons => http://glyphicons.com/ Font squirrel => http://www.fontsquirrel.com/tools/webfont-generator (font face)
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IMAGENS Jpeg para imagens PNG para icones CSS Sriptes Generator => http://spritegen.website-performance.org/
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MEDIA QUERIES - BREAKPOINTS
Less framework Os próprios comentários do Less framework já ajudam bastate http://lessframework.com/
Skeleton É bem especifico ao propor breakpoints. (mais detalhado) http://www.getskeleton.com/
Twitter bootstrap Menos detalhado que o Skeleton, mas da conta do recado http://getbootstrap.com/2.3.2/
Soluções javascript para <IE9 Respond Suporta apenas parametros min-width e max-width, mas é bastante eficiente no qeu se propoe https://github.com/scottjehl/Respond Não esquecer de utilizar o comentario condicional