It does not make much sense to have a metadata-free section along with
standard end-to-end-encrypted contact methods due to the varying designs
and threat models. Different configurations within the platforms and/or
apps can also add or remove metadata, so it should be left to the user
to configure that or simply avoid the platform/app if it's a part of
their threat model.
SimpleX is ver similar to Signal, but requires no phone number, allows
using multiple chat profiles within the same Linux user account/Android
user profile, has a better metadata-stripping/metadata-hiding design,
and has better moderation features for groups.
Improve spacing around `img.logo-small` CSS class, and switch to
bullet lists for contact information to allow multiple addresses etc per
contact method.
XHTML provides strict parsing checks to enforce XML compliance, unlike
HTML which will allow broken code to load. Code-correctness will
substantially increase with this change.
