ReverbNation is one of the biggest players in the marketplace of services for independent musicians. They connect 3M+ musicians, venues, labels and industry pros with a powerful platform. They have a solid track record of innovation, and their free version is a more than substantial resource in and of itself. The features are truly exhaustive — you’re not likely to find any gaps in their functionality. There are tip jars, website widgets and marketing tools galore. If you’re willing to pay small monthly fees for add-on services, it’s easy to use ReverbNation to turbo-boost your marketing and grow your fan base. As always, don’t get exploited by music submission fees from 3rd parties, which ReverbNation offers as a continuous stream of “opportunities” to separate you from your cash for a long-odds shot at a gig.