I thought we weren't even supposed to be talking about these multigame boards in the first place. Not that I care, just remember it being a pretty firm rule 5 years ago. 
People posting about these

x-in-1 boards makes things a whole lot harder for the mod team.

My understanding is that Saint wants to deal with X-in-1 board information like we deal with ROM information.
The following examples are not all-inclusive but indicate the broad outlines of BYOAC standards regarding this topic.
Acceptable:
- Wiring pinouts
- DIPswitch settings
- General purpose operational information
Not acceptable:
- Posting an x-in-1 board or cabinet for sale in B/S/T
- Linking to an x-in-1 for sale page
- Direct mention
or hint that a particular vendor sells them
- Images that reveal that a particular vendor sells them (watermark, embedded text, etc.)
- Link to x-in-1 information/images on a vendor site URL i.e. vendorsite.com/X-in-1_manual.pdf or vendorsite.com/X-in-1.jpg
- Posting that someone should check out a page/thread that you know has x-in-1 vendor info/links
Scott