Experts Exchange is borderline spam, to put it mildly. They hide the answer at the very end of an enormous scroll (of course after they try to sell you via a pop-up). A reasonable user has no clue that the answer is on the page.

When I have made it all the way down, I have received a quality solution perhaps 5 out of 500 times.

Stack Overflow realized there was a quality problem with the existing tech Q&A services and ate their lunches. Ditto for Quora. Hopefully they can keep it up.