It's funny you mention that type of approach, as I've put together a portfolio here currently around 300+ companies, all of which I plan to buy $1000 worth of shares and let sit. Working on the same premise is that a majority will still make more money than those that lose, and I don't have to play the market daily or worry too much. If something starts to shift dramatically, even in one day, chances are I can still recover some portion of my loss if the company has tanked... or wait it out to get it back, if the company is an increasing profit company.
I've been using TheStreet website tool to help identify growth companies / companies of long-term historical slow growth. These are incorporated into some medium - high risk investments, to round out an overall portfolio for me to setup and leave here, adjusting only slightly as needed.
I'm still waiting though to see whether they sort out this cliff nonsense, as that could make a difference of having to wait a year to see any profit versus coming sooner profit in the coming month or two once it all hits bottom for the most part.
I think we'll really know one way or the other come Friday, Monday at the latest as the markets will close new years day and reaction will likely occur before close I would think, rather than the first day back for the new year. A few days will tell us all I guess... fingers crossed.