I remember some bloggers at the time describing the same thing [1].
I'd be curious if anyone knows more details.
We used StumbleUpon to visit interesting sites we wouldn’t otherwise find. It didn’t exist to keep you deeply engaged with a main StumbleUpon website.
The aggregators are meant to be the destination. The links are more like shiny dangling lures. Some of them (reddit) do everything they can to keep you from having a reason to leave the page at all.
So I suppose it would follow that one gets people engaged in your site, while the other kinda tries to keep them from doing that.
But Curlie doesn't appear in the website linked in the parent post.
Dmoz! Those were the good days. :-)
Although it can still be a gamble whether a small site made it to DuckDuckGo (Bing’s crawler)
But that only affects about seven of us anyway so your point stands
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Trying to remember a different one…