Tiny Twitter tweaks
This is almost as nitpicking as John Gruber's observations on iTunes source list shading, but I've just noticed a tiny change as part of Twitter's midweek redesign, which saw alternating background table rows replaced with rules separating each entry.
Now, on the page describing what you and your friends are doing, any entries from people whose tweets aren't public have a title attribute: "[Friend's] updates are protected! Please don't share." In most browsers, this means you get a tooltip with that message.
This addresses a minor, but serious, complaint I had about that page, namely that there was no indication that a user wanted (or didn't want) his updates shared. It's not quite as obvious as Flickr's privacy "traffic lights", but it's a lot better than nothing, so I thought I'd mention it, even if it is a very small change.
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