Many sites runs on "auto-pilot". A common price these sell for in site-for-sale forums is 12-24 months' worth of net earnings (silly price, but it's true). Provided you don't mess the site up you can recover your capital in as little as 12 months and then ... sell the site to recover your capital again. Double your capital every year. 100% return. Sack your stockbrokers. It really is a crazy world!
Site flipping doesn't require as much capital and expertise as many people believe. Like property flipping, you buy one that needs a bit of TLC. Do it up, then sell it on for a whacking great profit. And, the beauty is you never have to deal with tenants!21. How about cornering a little market? There are DMOZ categories with grandfathered sites (sites that have been listed for many years) which aren't being updated. If you can pick up a few sites in the same category and merge their content suddenly you "own" that niche. That opens a lot of possibilities.