Some topic titles (a lot, to be honest) don't give a clear indication on which sub-forum they live in.

I would suggest adding the sub-forum below the topic title.

E.g.

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My awesome topic

Forums >> Desktop Computing

Created by AwesomeUser, last reply by OtherAwesomeUser on 01-Jan-1970 00:00 (100 replies) 

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But without the extra spacing that's added in here, of course :)