It's better to create short dense posts than lengthy infrequent posts.
One of the major culprits of creating great lo-fi information packed posts is a San Francisco entrepreneur Ramit Sethi, author of I Will Teach You to Be Rich. Here's his designer Ben Bleikamp explaining his rationale in approching Ramit's blog.
Note how Ben talks about:
- Trust through "social proof"
- How the purchase calls to action complete the "user loop" and how comments don't
- Analytics and live site A/B testing