Purpose: This niche blog was inspired by the introduction of Apple’s Mac mini in January 2005. This neat little (just 6.5 inches square) CPU is designed for users to have more fun with music, photos and movies right out of the box. So, why not take this small footprint multimedia machine and install it in a car to run your music, your video, etc. The blog, launched in two days after the hardware started shipping, explores ways enthusiasts can (and have) done installations and what they in their automobiles.

Features: The site averages approximately 1000 unique visitors a day who participate in the forums to discuss products and installations. The blog reports on product reviews, offers up-to-date news, and unique stories.

Why It’s Successful: This blog’s success comes from its readers who nurture the discussions along the way. The topic really suits a narrow audience who are rabid Apple-addicts, techies, and audiophiles with great content and imagery.

Go check out MacVroom!