I sometimes post rides there and also on this thread:
You can set the notifications settings for the above thread to “Following” so you’ll get notifications. Not a lot of conversation happens after I post the ride, so the thread gets pushed down on the feed. However, the quickest way is to join the LINE group, I will send the info there after I’ve posted on the forums.
For rides like @okonomiyaki and I did on Saturday, I tend not to extend an invite to everyone. As his write up states, these rides are just not fun and I hold myself responsible if members get lost or don’t have a good time.
If it’s the first time meeting new people, I prefer to host a bit of a more leisure route or pace, that’s when I will post a meet up time/location and route.