Just a heads-up for you here:
According to Tom, this is basically where the line should be drawn on what counts as shovelware. Any more generic than that, and it's likely to be a sweatshop account. Obviously there are going to be some grey areas with which are the sweatshops and which are just generic, uncreative flash makers, but there are 2 things I can think of that you can use to spot the difference:
1. Presence / absence of ads in the flashes.
Obviously, a submitter probably isn't a shovelware account designed to generate ad revenue if it's not putting ads in its flashes. Lack of ads pretty much rules them out of being submitted for that purpose. Of course, one of them might get clever and only put ads in after their flashes pass judgement, which is why it's a good idea to re-check it after it comes out of the purple if you're unsure.
2. Amount of flashes submitted.
Again, pretty obvious, but the clue's in the term here: "Shovelware" isn't shovelware until it's being submitted by the shovel-ful. One or two random things that might bear a resemblance to something you've already seen before isn't worth bringing up, but if you come across the same submission more than 3 or 4 times with little or no real differences between them, you've got a shoveller.
For this reason, I don't think it's really worth flagging up every last thing that looks like something else that might've been submitted before (unless it's one of the really obvious ad nauseum dress-up etc. games that've already been stamped into everyone's cranium here); only when you start seeing said resemblance more than a few times should it be a cause for concern. We do want to look for new types of games they come out with (which they will, if they haven't already), but we don't want to get so strict with originality that we end up going after the wrong submitters. It's all about fairness in the portal, after all.
Just my random 2 cents on the matter. Along with a penny of unknown currency I found in the couch.