[quahada]

The challenge is not technical. The challenge is community. RapGenius is a network effects driven site, so it's utility is driven by how many people use the site. Technology is table-stakes, but branding and marketing matter much more at this point.

RapGenius grew because their user experience was much better than their competition. This was the foundation for their branding & marketing. Their growth will be sustained by their content and (once these penalties are phased out) by users' ability to discover their unique content. The technology is merely an enabler for the community-generated content. New competitors must find ways around the community's cold-start problem.

Edit: typos