25 Of The Most Useful Web Design Blogs Of This Year by Bogdan Sandu.
I kept the listing order but added the names of the sites/blogs. Reasoning those are easier to recognize than bare URLs.
Smashing Magazine http://www.smashingmagazine.com/
speckyboy Design Magazine http://speckyboy.com/
The Dave Walsh Blog http://davidwalsh.name/
TutorialZinetz http://tutorialzine.com/
Design Your Way http://www.designyourway.net/blog/
CSS – Tricks http://css-tricks.com/
HONGKIAT.COM http://www.hongkiat.com/blog/
onextrapixel http://www.onextrapixel.com/
Noupe http://www.noupe.com/
Web Designer Wall http://webdesignerwall.com/
Webdesigner Depot http://www.webdesignerdepot.com/
WPtuts+ http://wp.tutsplus.com/
Vandelay Design http://vandelaydesign.com/blog/
1stWebDesigner http://www.1stwebdesigner.com/
Design Shack http://designshack.net/
Six Revisions http://sixrevisions.com/
Web Designer Ledger (WDL) http://webdesignledger.com/
Nettuts+ http://net.tutsplus.com/
SpyreStudios http://spyrestudios.com/
Webdesigntuts+ http://webdesign.tutsplus.com/
Digital Telepathy Blog http://www.dtelepathy.com/blog/
Abduzeedo http://abduzeedo.com/
Codrops http://tympanus.net/codrops/
Awwwards http://www.awwwards.com/blog/
Designmodo http://designmodo.com/