A small list of the most, in my opinion, useful sites for any WEB-developer who is interested in the field of web design, layout and programming. I think everyone among this list will find for itself sites which for a long time will enter into its RSS feed.

A List Apart contains the best tips and opinions from leading industry minds.
Still:

')
Build Internet! this is a relatively new blog, but it has already staked itself among the best blogs about web design and development and much more.
Still:

This is the site that will be useful to anyone who deals with CSS. Contains many tricks and CSS techniques.
Still:


And resources like Design Bump and Design Moo have a social aspect of voting, like in Digg, but they are completely focused on web design and development.
Still:

Elliot Jay Stocks' recent site redesign shows the capabilities of modern web design.

Videocast brothers Mark and David Perel, in which they talk about web design.
Still:

A great resource about all sorts of things related to design.
Still:

As one might guess from the site name, HTML 5 Gallery is a gallery of sites using HTML 5 elements.
Still:

Typography plays an important role in web design, and I Love Typography is one of the best blogs on this topic.
Still:

An excellent blog about various aspects of design, typography and more.
Still:

A great tool for color matching from Adobe.

A creative web design blog by Chris Spooner.
Still:

Professional design blog with many tutorials and freelancer tips.

Excellent blog dedicated to web design and development.
Still:

The most creative portfolio from the most creative designers from around the world.
Still:

An excellent collection of design elements collected from various sites.
Still:

Broadcast hot links from Twitter from the most interesting people.
Still:
- Qbrushes ( free brushes for Photoshop)
- QNT (gallery of digital art magazines and web design sites)
- QuirksBlog (a blog about testing and browser compatibility)

A blog with reflections on design, creativity and beauty. It contains a lot of interesting material from analytical articles about typography and ending with interviews with creative designers.
Still:
- Reencoded (Resource dedicated to web design and development)

What would this list be without Smashing Magazine ?! The best site for designers and developers.
Still:

Tutorial Magazine collects the best tutorials on web design and development. Simple cute design and good presentation of materials.
Still:

Great look at usability on the web and not only. It is updated not very often, but every post of excellent quality.
Still:

Another great web design / development blog.
Still:

The creative design of the site, the site reads a large number of people because of the very high quality content.
Still:
X - Nothing ?!
No good site was found that starts with X.

Another site found at the time of writing this post, but it will be far from superfluous in the RSS feed of any designer.

The only found site on Z. Contains material aggregated from various sites on the network.