The main problem I see with the 5 minute delay on edits is that if you want to attach and embed an image following the recommended procedure here:http://forum.arduino.cc/index.php?topic=364156you actually do need to post and then edit the post ASAP. This forum is so active that people will have already read the post within 5 minutes. It's tedious to have to wait around for the 5 minutes to be up so a lot of newcomers just won't bother to do so. This means either we end up having to download the attached image to view it instead of seeing it at a glance or they end up hosting the image elsewhere and often after some time that content disappears so people viewing the thread in years to come are missing important information.
Well it seemed like a bug
Speaking of images though, Is there a reason why an image I attach can (a) be seen in line, in the place within the post where it was relevant, and (b) can't be seen during a preview? It would be helpful, especially with schematics. And its already been mentioned that placing the image just using the supplied button only results in a URL request, and though I "could" put the image offline, its a lot of bother, and I couldn't guarantee its permanence then.