You're right, but now I wonder how it happened (going to HTTPS). I would guess that I googled the address somehow or followed someone's link, but I don't remember anymore.
but now I wonder how it happened (going to HTTPS)
I think that by now both Chrome and Firefox will, by default, attempt an HTTPS connection if HTTP is not specified explicitly.
That is, going to "rationality.org" will by default do "https://rationality.org". You can manually override that by specifying "http://rationality.org", but, of course, few people bother.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)
3. Open Threads should be posted in Discussion, and not Main.
4. Open Threads should start on Monday, and end on Sunday.