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Blogging for Devs - Grow your blog as a developer without an existing audience
Tutr Instruct - The easiest way for teachers to host live classes
Letterpad - Letterpad Answers, Cheats, Words, Solutions for iPhone, iPad, Android, Kindle and other devices, this free word puzzles is developed by NimbleBit LLC.
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TheSeoLabs - Find news guest post opportunities with more than 15 000 Blogs that accept guest post, with contact information and SEO metrics.