I don't think your comment necessarily has to be viewed as belittling them...obviously a big part of getting into ycombinator (or any other credible incubator) for startups is the opportunity to get access and credibility (and getting into the program to begin with says something as well because it is competitive and the idea does happen to have the potential to be a homerun due to the so-called network effect, especially with some sort of groupon like approach to monetizing these activities). To those who say someone got it just because PG liked them, of course the charisma/leadership of a founder is a major factor in success, and the ability to forge strategic partnerships (friends of your business) is huge. Bootstrapping and owning the whole pie is great, but of course you have to have some knack for marketing your idea and figuring out creative PR because no one is going to find you hiding in your garage (ie to actually see your service and signup). Ycomb and techcrunch are two great 'shortcuts' so to speak but obviously aren't the only ones.

So in reference to your question about whether they could actually exist as companies rather than hobbies without Ycomb and techcrunch, I'd say 1) it's a good thing they have those avenues to take a shot at succeeding with their idea and 2) i'd love to hear from other users what they view as some of the other top blogs and incubators that can make or break a young startup at an early stage.

PS the first thing i thought when i read about this idea is that i'd love to find a local activity with my wife as we've just had our first child and need to drop some ice cream related pounds :)