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I thought I was doing well when D20 Source reached 700 subscribers, but Yax’s blog Dungeon Mastering leaves it in the dust: over 5,000 subscribers this month and counting. On top of that they recently launched Dungeon Mastering Tools, an online service for creating and sharing monster statblocks, monster templates, magic items, encounters, powers and traps for D&D fourth edition.

You can sign up to this service now for free. For today and tomorrow only, there’s also a special offer: upgrade to Premium membership and receive a free copy of Open Game Table, a 140-page print book collecting some of the best RPG blog material of the past several years. The book includes my 2006 adventure design essay The Invisible Dungeon.