I've noticed increasing use -- on sites focused on revenue. E.g. web page version of "traditional" press publications, who now link to Scribd instead of direct

I've noticed increasing use -- on sites focused on revenue. E.g. web page version of "traditional" press publications, who now link to Scribd instead of directly to a PDF. I don't have an analysis nor experience for an informed comment, but it seems to me that Scribd use is all about attempting to gain some revenue from the content. A year or two ago, I had to help someone with their Joomla site (personal obligation). Many formerly freely accessible references that were cited in older comments online, I now found "locked up" in Scribd. One/some of the core authors of this documentation appeared to have made a concerted effort to remove the "plain web" versions and relocate them into Scribd. Fine. Their content. But if you're asking what Scribd is about, that's my impression.