When the asker disappears (which happens even more at SO) a cleanup crew will come and either accept an answer (but give the experts chance to discuss which) or delete it. At SO it just sits there, with whatever votes and no accept. When the opposite happens, you need to do a bounty at SO which may or may not work (never worked for me). At EE the question is first marked abandoned, attracting experts who subscribe to that zone - if no reaction, a moderator will send out requests to know experts in the zone and re-zone if needed. Works well
Just a remark - Experts-Exchange user generated content. If something is copied from elsewhere and not attributed, it will be attributed or deleted and the poster told off.
Just scroll down past the stupid paywall when you come from google or bing. Or become an expert for free http://bit.ly/EEfree
I have been an expert there (not an employee) since 1998 and it is a great site. For a while now there are free articles and blogs too. I agree with the haters that the paywall should go away, but that is the decision of the owners of EE and those in the know can get full ad-free access by answering approx 3 questions a month. It took me more effort to have a reasonable flair at SO...