What's your general opinion about Domain Parking?

Some weeks ago, I ran into this major bummer.

Please, skip what’s within the—- block below, if you prefer not reading lengthy messages.

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I was plotting out a whole, nice Web 2.0 concept idea, about a website that should act as a one-stop place for gathering information about all (I mean ALL) of the available apps in specific categories. Som that when someone are to buy a FTP client, for example, the service would provide a list (nicely laid out in a horizontal line) of all there is (really, ALL there is) in the specific genre.

Adding to that, there should also be a function on the website, where the community gets to vote thumbs up or down on an app, once each time the app gets updated or something like that. There more they vote, the higher their chances of winning free software would be (or some kind of similarly rewarding incentive system that gets people to vote for the apps). And finally, the standings between the competitor apps should be raised and lowered all in realtime, so that you could watch the statistics and follow them closely after each program updates.
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Now. I came up with a website domain name that I was totally super happy with, and it was also available at .com (which is often the only tld I’m interested in):

http://www.appcharts.com

I was just about to purchase the address, when I realized I had to wait a few days until my salary came in (as I was absolutely broke). Went to my parents one week over Easter and when I came back home, I was about to register the site, when I found that somebody had just snatched it when I was gone and parked it “free courtesy of GoDaddy’s”...

Whether the current owner is going to do the very same thing as my idea, appcharts (read background above), is left to be seen. (For all I know, that would be totally weird, really… someone reading my mind).

But, the actual purpose for this posting, is to find out what you fellows think about this phenomena of parking domains and never do anything with em, but wait for an opportunity to sell them, expensive as hell. Personally, I think it’s detrimental to the ambitions of decent people who honestly want to acquire web domains in order to actually DO something with them.

I’m also curious to know, if anyone knows anything about people being able to sniff out, when somebody makes a whois check to see if a website it free to register, in which case they try to buy it before you?

Also, it says on GoDaddy, on the appcharts site above, that it’s “parked free” courtesy of GoDaddy.com… what does that really mean?