I have signed CLA (not connected to any project),
but that was to not look like a outsider/stranger,
as I noticed quite often communication goes between eclipse
committers that seems to know each other well,
while some post from users (in some project) may be overlooked.
It's true that most contributors are more involved in -dev
mailing-list and Bugzilla discussions than in providing user
assistance on forums.
That of course has its reason as often those bugs
are not of good examples of problem reporting.
=> Instead of showing CLA tags that divides users into 2
categories, it would be better to have link to Eclipse profile,
where it could be seen for example that the person is
contributor in those project or is active on Eclipse forums etc.