https://StellarCommunity.org is a relatively new forum based around all things Stellar! One of the main things that I wanted to improve was to create a forum that was nice and easy to use - so a good bit of time was spent making sure the UI was nice ?
Just some of the things I've worked on (with the help of people providing feedback in our "Site Feedback" category):
1⃣ Facebook and Twitter integration to make it easy to sign up
2⃣ A live chat box that allows members to quickly chat to each other
3⃣ A nice mobile experience, not just desktop focused
4⃣ Stellar price ticker on every page on desktop to make sure people know what the price is at the moment
5⃣ Moderation - spam isn't tolerated at all on the forum, which a lot of other forums are well known for
6⃣ Lightening fast servers (which lots of members commented on which was surprising to me ?)
7⃣ A tutorials section which is fairly new to help people learn about Stellar, all these posts are high quality and quite detailed
8⃣ No ads at all!
9⃣ Hosted the BlackWallet (great project by the way) giveaway at https://stellarcommunity.org/t/blackwallet-enhanced-account-viewer-giveaway
1⃣ 0⃣ Weekly digest email added so members can see what happened on a weekly basis on the forum
1⃣ 1⃣ Tutorial category has more great posts to help out the Stellar community learn more about all things Stellar, including a post by Brian from the Stellar organisation.
1⃣ 2⃣ Now featured on CoinMarketCap's Stellar page.
1⃣ 3⃣ Roughly 150,000 page views now, and growing by the day - especially since it started to rank well on Google ?
Almost too many things to mention here, but if you have any ideas to improve the forum I'd love to hear them!