Oh, mobile! I get that.
But yes, most of us (I don't visit moodle.org from my phone) are using the email links to come to the site, and since we can see the page, we don't get a login prompt.
This is an interesting problem, given that I use multi browsers, and often Google search the site but don't login to moodle.org from the less favored browser. I just browse the Google results for an issue. So, non logins by definition need to have access to the forums (notice I'm not calling them "Using Moodle") without a login getting in the way. Hmm, but to comment, they need to register or login.
One of those pesky popup "Register now" boxes on mobile is wrong. User wants to see the results before registering, and once dismissed, the registration option is hard to find on most sites.
Not sure you need the top right spot, just because of old fogeys like me. But you need top or a left or right tab or something.
PS nice to have Mary following me for a change
I'll go look at this on my Droid and see what I see.
PPS Joseph, I see what you slabbed