How many of those top-100 are actually one person, not a network of people? I wouldn’t jump the gun here. I’ve found the problem w/ posting too much, the content doesn’t have time to sink into the search engines. You let that last post sit there a while in the root, search engines notice it more. At least that is my opinion/experience.

Also, think about comments. You post 10x per day and I don’t think you’ll get as many comments per post, and I’m pretty sure comments are good for SE rank. And obviously, the more you post the less time you spend editing. I think editing is very important, especially when you consider everything you write is burned into the Internet for eternity.

I’ve tried posting very frequently, not-so-frequently, I don’t see much difference in terms of traffic. I suppose it depends on where you get your traffic from and if you’re writing time-sensitive stuff.

In my experience it’s only a few posts that generate most of your traffic. I looked at TechCrunch’s stats once, that was the case there too. If you know how to write heavy-traffic posts you’ll never need to post more than once a day. Maybe a good analogy is the stock market, you don’t jump on every opportunity, you wait for strong signals. If you’re flirting all over the place you’ll be distracted.