ALMOST EVERY ONE OF US has likely heard the ancient proverb, "Two heads are better than one." And though many entrepreneurs like to consider themselves lone wolves, teaming up (whether on a temporary or permanent basis) can be very beneficial for your business.

Since we like to practice what we preach around here, we've been busy creating some alliances ourselves, which enable us to better serve you.

For several years now, we've been working with the folks at eBay on various projects. That alliance is growing. In 2004, we teamed up to publish the first Entrepreneur's eBay Startup Guide, an annual newsstand-only publication that helps readers start or expand businesses ...