I had a content site from January 2011 until September 2013. From the first day until June 2013 I had less than 100 sign ups. Then I forced people to enter their email before the opaque screen is removed to allow click-through. The result: 8000+ emails from June to September..... Then I accidentally deleted my database (without backup).

Or you can just add ?share=1 to the end of a Quora link to remove overlay.

I had an account with them, but removed it after they started showing others what questions I was reading. Does Quora still do this?

Depends on the economics of your business. It could be more profitable to lose some of the easily annoyed if you can get the rest to come back on a more regular basis via email contact.

But yeah, that's a big bone of contention both inside and outside Quora. The people who write a lot on Quora generally hate it, because it limits their audience. The Quora management, though, believe it is strongly to their advantage. They've never published stats or even their full reasoning, but they are quite firm in their belief that their data shows it working for them.

As skolos mentioned you can add '?share=1' to a Quora URL to view all the answers.[1]

To make this easier for myself, I use a bookmarklet with:

  javascript:(function(){window.location=window.location.toString()+"?share=1";})()

[1] https://blog.quora.com/Making-Sharing-Better

I just open Firebug or Chrome's developer console and delete the overlay. Annoying as fuck.