After the forum names you can see the tags to find old threads from the corresponding subforum. Below are top topics at the moment when bungie.old was set to read-only.
[b][u]Bungie Universe[/u] -> [url=http://www.bungie.net/en-US/View/community/Forum/Topics?page=0&ty=0&s=1&d=0&tg=%23halo%20%23fiction%20%23campaign%20%23story]#Halo, #Fiction, #Campaign, #Story[/url][/b]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=3396502]Bungie's new game (Destiny)[/url]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=3219745]If you were an Elite (Sangheili), what would your name be?[/url]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=3482281]Any secrets left Bungie? Poll link at bottom of first post.[/url]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=2403673]what would your UNSC or Covenant ship name be[/url]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=3568120]The Death of Master Chief *UPDATE!*[/url]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=3260897]The Importance of Helmets in Halo: Reach. (WALL OF TEXT)[/url]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=2194551]What's your favorite dialog from any Halo game or book?[/url]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=3633289]Looking for info on Destiny? Wondering about Halo, Come in for info![/url]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=3354977]My God, It's Full of Stars - The Destiny Map - [EARTH LOCATION][/url]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=3416343]Predicting Destiny Based on Halo 3: ODST and Halo Reach[/url]
[b][u]Bungie.net Community[/u] -> [url=http://www.bungie.net/en-US/View/community/Forum/Topics?page=0&ty=0&s=1&d=0&tg=%23septagon%20%23community]#Septagon, #Community[/url][/b]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=3596148]Request a ban on a Mythic Member[/url]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=643235]FAQ on Bungie.net Member Titles / Prefixes / Bar Colors[/url]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=680263]Bungie Webcam[/url]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=3088213]Swag Central - Discuss your Bungie Swag here!!![/url]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=3284240]Bungie.net Members List (UPDATED: 10.29.2012)[/url]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=1221248]Script Central> All GM Scripts Here![/url]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=3596738]Bungie.net History: A Blast From The Past (Now with More Awesomeness!)[/url]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=3589590]The New Archive of Hilarity.[/url]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=3440571]DESTINY: The Joyeuse IP Formula: Version 2.0 (With pictures!)[/url]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=2115032]Mapping World Domination[/url]
[b][u]Off Topic: The Flood[/u] -> [url=http://www.bungie.net/en-US/View/community/Forum/Topics?page=0&ty=0&s=1&d=0&tg=%23offtopic%20%23flood]#offtopic, #Flood[/url][/b]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=2800376]How to control your dreams-Lucid dreaming ;Share your experiences!![/url]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=737253]Say the most Random Facts![/url]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=2931449]The Flood's Lifehacker Thread[/url]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=743145]Short, Scary Stories![/url]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=3546007]Fitness 101: A Beginner's Guide to Working Out[/url]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=618102]Creepiest things that have happened to you.[/url]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=3504358]Want to build a PC? PC Building Guide and FAQ of The Flood[/url]
* [url=http://www.bungie.net/en-us/View/community/Forum/Post?id=1551724]Flood Funny Sayings [What should I do for 100th page?][/url]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=1686372]What is this Slender man thing?(Looking for new manager, read OP)[/url]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=2132023]I-Doser - Audio drugs for the mind[/url]
[b][u]The Gallery Forum[/u] -> [url=http://www.bungie.net/en-US/View/community/Forum/Topics?page=0&ty=0&s=1&d=0&tg=%23gallery%20%23fanart]#Gallery, #FanArt[/url][/b]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=3644505]Destiny - ART IN MOTION (Animated Trailer) by Ferino Design[/url]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=3133041]Rise of the Spartans (Reach Machinima)[/url]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=3619853]The Man Who Sang to the Stars[/url]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=3651773]Destiny Fan Art [Reposted from the Flood!][/url]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=3644467]Metal Destiny Logos.[/url]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=3650489]Forward Unto Dawn and Requiem (update) [Digital Art][/url]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=1668878][Novel] True Sangheili (Part 39 available!) ~ 18 December[/url]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=3637885]Default avatar made with beads[/url]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=3613788]I Am Duct Tape Master Chief[/url]
* [url=http://www.bungie.net/en-US/View/community/Forum/Post?id=3593126]The History of Bungie- A poem.[/url]
[i]for second half see [url=http://www.bungie.net/en-us/View/community/Forum/Post?id=59709157]Part 2 ...[/url][/i]
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If only we got sub forums back......this just doesn't do as good! People always put stuff related to every main bungie hashtag just to get more posts. DAMN YOU HASHTAGS AND SORT BY OPTIONS!!!