In every niche, there are certain topics and questions that are frequently asked or pondered, but rarely have definitive answers. While this recommendation applies to nearly every content-based site, it's particularly easy to leverage with a blog. If everyone in the online Nascar forums is wondering about the components and cost of an average Nascar vehicle - give it to them. If the online stock trading industry is rife with questions about the best performing stocks after a terrorist threat, your path is clear. Spend the time and effort to research, document and deliver and you're virtually guaranteed link-worthy content that will attract new visitors and subscribers.