They're making a mistake, then.
Normal thread policy, at least if I remember correctly, is to indicate both host and format in the title thread.
1. Title Format
The soundtrack name is a given, but if possible and when the soundtrack name isn't too long to add any info, it would be best to add which format the soundtrack is in, such as FLAC, MP3, OGG, M4A or whatever, also the bit rate if it's MP3, like 320, 256, 224, 192, vbr etc. The composer name would also be a plus to be included, but it's not a priority if there's not enough room. When there's not enough room for additional information, please add it to the thread itself, it really does help others that have a preference when it comes to bit rates/format. This will also help mods to merge threads if any do happen to slip through.
Here's an example: S�lect Hotel - J�r�me Coullet (1996) [FLAC + 320]
here's the thread:
Thread 98919
Also, making a lossless subforum would be pointless for 2 reasons: one, it wouldn't be one but 3 lossless subforums. which means twice as much moderation. it would make what is already an abominable clutter of data even worse, etc, etc. Plus there have been request like your in the past and I think they were either denied or ignored.