It typically represents characters that are not displayable due to the language/font/character encoding settings. You can try adjusting your browser's settings, but if they're at the defaults I would y it on the website you're visiting.
Boy the new web site sort of sucks to navigate.
Below is part of a sentence I was reading, and I notice this is showing up more and more for me. And the (?) marks shouldn't be there.
Is it me or the other persons computer ?
(called her ?a quiet feminist? who ?in her own quiet way is relentlessly dedicated? to libraries.)
I might have something else related or maybe not.
right clicking and "open in new window" it opens a blank page.
Even though this stuff worked before and I never install or use java.