- you have posting access to
- is a community you don't want others to KNOW you're a part of (for various legal and privacy issues)
You can go to the admin console and type in ban_set XXX where 'XXX' is the name of the community.
The community will still show up under posting access which is only visible to you in the new profile, but random folks won't be able to see your real community list XD
I have 260+ comms under posting access but only 5 listed at the moment under 'Member of '. For the communities I don't have posting access to, I listed them in a f-locked post for easy look up when I need them. This way, the profile becomes much shorter.
Alternatively you can hide the list of users who have friended you, but that just makes peeps whip out the LJ friend-of deprivacy wizard XD That site doesn't list comms though.
'Kay, that was my last post on the userinfo. Will be travelling this weekend to visit family \o/