Mods ..... this should be tagged as qna-feedback, but it wouldn't let me post this using that tag
The site should not assign a random username, but allow the user to pick one. Tried changing mine and that resulted in "something went wrong"
If a user wants to maintain a consistent handle across different platforms they should be able to.
Some users have established solid reputations that took tens of years to build on other platforms (forums.asp.net / forums.iis.net / etc), you will need to figure out a way to let them convert their reptutation scores to an QnA reptutation. That is a sure way to get them engaged. Without that they are going to think twice of putting the same amount of effort in.
Gif animations are very handy, however there needs to be a way to pause them, or even slo-mo.
Currently you allow only one (1) post to be marked as the answer, however technical questions almost always have multiple solutions, which one is best depends on details of the implementation which can vary greatly based on the application. Long story short multiple answers should be allowed.
Also, PM between users is something that happens all the time on other platforms. Think it is beneficial in establishing relationships.