After noticing a $10 Experts-Exchange (EE) fee on my credit card, I realized I've had an idle EE account for quite a few years. I sent them an email asking for instructions on how to close it, and mentioned that they were great, but that they couldn't compete with Stack Overflow (which is true; I got a lot of help from their experts when I was first learning).
Anyway, they emailed me back with cancellation instructions, as well as some extended commentary about Stack Overflow. I thought some members here might get a kick out of reading it, so I reproduce here for your amusement.
We are sad to see you go, and we are always open to feedback from our members. Our site is definitely set up differently than Stack Overflow, so feel free to explore Stack Overflow and just know you will always be welcome back at Experts Exchange.
While Experts Exchange offers expertise on any aspect of technology, Stack Overflow has a much narrower field of attention, focused only on issues related to programming.
Stack Overflow is collaboratively edited, which means that others can edit your work on their site. Though Experts Exchange is a moderated forum, your work will never be edited by other users of our site.
Stack Overflow and Experts Exchange use different systems to select an answer. On Stack Overflow, the community votes for the best answer; on Experts Exchange, the person who asked the question is prompted to choose the most complete solution. While both methods have their plusses and minuses, we think your best chance of getting the right answer is having the asker tell you “yeah, this worked for me.”
The way our accounts are created ensures that our users are kept up to date on the status of their questions. Experts Exchange users are informed of possible solutions to their problems by email, so they don’t have to keep checking the site for updates.