Hi Christoph! I came here to post the bootstrapped.fm link too, but I think HN is a fine place to post this discussion too. I think the small, bootstrapped company is where it's at for many of us who don't want to or can't do the VC thing in SV. That's probably a large majority even on a site like this.
Rob's book is an obbligatory reference in this space too:
http://www.amazon.com/Start-Small-Stay-Developers-Launching-...
My own thing is not 'successful' in that it's not my main source of income just yet, but it's not too far off, either: http://www.liberwriter.com
One of the key things I've learned from it is to go do something that matters to 'ordinary people', rather than something that's "cool" from a computer guy point of view.