This is more of a design resource store because it sells fonts and stock images, however the things they sell are pretty inspirational. No need to buy, just check out what amazing designs they have collected.
youworkforthem.com
Now this is the epitome of a blog, it has a lot of text and nearly no photos. However, this blog has valid things to say so don't be discouraged from the lack of visual elements.
underconsideration.com
The Design Sponge is more of a general design blog, it features everything from interior design to product design.
designspongeonline.com 
This website is a great resource for web designs and other design resources. The down side is it is riddled with ads and the layout design is not very inspirational.
digitalthread.com
Steven Heller is the most prolific design writers today. He has written so many books it's hard to keep track of. His contribution doesn't not stop there, he also has a daily blog that features things that inspire him.
dailyheller