No, that's much closer to plagiarism or backlinking. (and Google penalizes both although the latter gets a slow fix that anyone can SEO it much longer)
Scraping from my understanding is just that. Taking content and posting it to another website as a collection or set or link collection. (The amount, the quantity, the content is really up to the person's taste)
or the hundreds of software review sites that list tons and tons of software, with generic descriptions that are generated automatically somehow. And they don't help the user at all in finding what he is looking for. The categories for the are not consistent. Often times, you are looking for a particluar kind of video software, for example, but it just lists all the software that has anything to do with video, and no matter what VLC will be at the top. Stuff like that is what I'm talking about. It's ruining the web because it's impossible to find anything good.
See, the problem with that definition is that it relies on your opinion of generic.
Albeit, the low quality sites are pretty obvious but how do you differentiate The Superior Software List with Download.com with Fileforum at the generic categorical level that search engine spiders play at?
From a personal user level or even a review level, it's very easy. However from a grand macro level of search value, it's almost similar.
You could for example take two different contents talking about the same program but at the generic level, the end result is just to convince the searcher, that you are among the hundred of software reviewers who praise this specific program name.
Sure, the content can be unique in the sense that you wrote it but if the general theme is the same from every other positive reviewer over the internet, it's really no more generic as having someone's spidered definition praising the very same program.
...And it gets more generic as the program becomes more popular.
Let's use simplespark.com as a more concrete example to reference with.
Is Simple Spark useful or useless?
Well before that, does it fit your definition of a scraping site with generic descriptions? The answer would be yes.
But is it useful?
The answer is also yes especially earlier on.
Because there aren't that much copies of Web 2.0 search engine services even today.
It's easy to spot the popular services but the rarer ones like ProtoPage, you often get much earlier before the blogs start reviewing them and scraping them into "Alternative services to Netvibes".
It is only ruining the web via SEO in the sense that there have been lots of copycats.
...but in those copycats, there are still sites who aim for a much more useful goal like your site does.
The question is, how do you separate the fluff from the value when the value of a search engine ranking is also very much vague?
Albeit Google could do a better manual job of fixing things but generally it's not just Google. It's DuckDuckGo. It's Bing. It's even pseudo-human powered search engines like Mahalo.
At the end of the day though, if there isn't even at least "1" semi-credible scrape site, it ruins the web more because it's much harder to discover these cool quality lesser known apps.
By that very same token, these scrape sites are no more ruining the web than malware sites are or even less because they're the easiest to filter out. Sure, they are still suckering and annoying casual surfers but...it's also much easier to discover that...now... sites like Digg, Reddit, Mixx, Propeller, Delicious, Diigo, Twitter, Facebook...even Wikipedia... are slightly less bogged down scraping sites to discover things because the idea of a scraping site evolved. The idea of a scraping site became added with up or down buttons or Wiki-like possibilities that anyone can improved upon or individually filled public bookmarks.
In the grand scheme of things, they don't go so far as to ruin the web precisely because they are scraping sites where all the crap is littered into one url instead of all those marketing and SEO dominant crap sites with tons of backlinks towards their own self-made little information Twitter/Facebook/Squidoo/Hubpage/Youtube/Linkbait set of channels.