Just curious as to why the F4i main thread also has F/S and WTB sub threads, yet not all model threads have f/s and wtb sub threads?

Doesn't make sense to me but maybe I'm missing something...

Just a suggestion to keep it consistent across the forum or keep all f/s and wtb threads in one place with sub threads in the f/s and wtb sections.

 

Some sections need subsections because of the traffic and were requested by the members. Other sections don't need them, so don't have them.
The members asked to have the for sale threads attached to the relevant bike sections, instead of in the general for sale sections, which was done some time ago and appears to work well, as the members don't have to wade through adverts for parts for other bike models to find parts for their specific bike.

 

What Shadow said

For giggles go take a look at the 1000F section. Areas with high traffic and demand get the goodies ...