Showing off integrated donator ranks on profile pages
Integrated spellcheck in rich text editor
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I hope this answers a bit for you Finn, and anyone else who had similar concerns.
Always a fan of a forums but I think this change is pretty necessary for default- looking at how it looks while I'm typing, I really like it. Even though there were some things that I disagreed with in the old forums, I always found format important, which is something I know can be improved overtime!
Also I really enjoyed reg's post here so I'm just gonna post a bit of the importance :D