Apartment Therapy is a site I check out usually several times a day. With locations of New York, Los Angeles, San Franciso and Chicago (sorry, no Columbus) you get an inside look of what people are doing with thier home interiors and ideas/ products for your home. It's also sometimes fun to read the comments to see what people have to say about each post.
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Columbus Underground is a forum for all news, events and happenings in Columbus. Readers can also post thier own news and events and read the opinions of other readers in the comments section.
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Curbed is all about Real Estate, well New York Real Estate and even though I do not hold my New York Realtors License, it doesn't stop me from enjoying the rendering of new projects, Show Us Your Sales Office, Weekend Open House Roundup and more.