The watch list is linked from your Control Panel. Or if you want to bookmark it, the url is similar to the one on the Sun forums
There's no My Forums feature that I can see anywhere. A fabricated url threw up a 404.
The watch list sends you emails, with several options but no 'never' option, which seems like a very elementary omission to me. I briefly made one but it also didn't show recent activity..
Not the same thing. By a country mile.
the missing "my forums" is actually quite painful. There are just so many topics in the list I'm absolutely not interested in/familiar with :/
Luckily you can bookmark the java section directly, that at least softens the pain a little.