How you participate is up to you, but be ambitious! Sites: promise to add HTTPS, HSTS, and PFS this year.
OpenStreetMap Enhances User Privacy
Today, OpenStreetMap has enabled encryption (SSL) to all of the openstreetmap.org website, thereby enhancing the privacy of its users.
You can now browse the site at https://openstreetmap.org (note the ‘https’). This means your browsing activity is secure from snooping.
As this was on pretty short notice I though I'd just write this diary. I wasn't really sure who to contact about adding the OSM website or if that should be done at all. I guess it is up to the OpenStreetMap Foundation?