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…Startup Lessons Learned. Eric Ries only started blogging a few months ago, but he's already written some cracking posts, like SEM for $5 a day, using the 5 whys to focus your development investment, and when not to listen to your users. These are all obviously tales from the trenches. He's able to dig into the subtleties of tricky topics like agile programming and give advice based on experience.

His focus on building a lean startup is especially useful these days, and I love his focus on the engineering nitty-gritty, I can relate to The Engineering Manager's Lament especially. Go subscribe and make sure he keeps up the good work!