Facebook lets you add raw email addresses to conversations even if they're not registered with Facebook accounts. As far as I can tell, there's no way… …for the person who owns the email address to ...
Hotmail has Gmail-style conversations nowadays, but they're exactly backwards, in my personal opinion: they run newest to oldest, rather than oldest to newest. I can change the order of the thread ...
We've encountered an issue with labels. A great example (and case in point) is a "completed" label. The conversation feature is great, but if we label a conversation as "completed", and drag it out ...