Twitter doesn't count usernames towards a tweet's 140 characters anymore

Twitter's 140 character rule still exists, but the company has been taking some steps to mitigate it somewhat recently. The newest such move comes today, when it's announced that usernames aren't counted towards that 140 character tweet limit anymore. What this means in practice is that you will get slightly more space to express your thoughts when you're addressing other individual users of the service, and a lot more space in group conversations. From now on who you're replying to will appear above the tweet and not within the tweet text, so you have more characters for the actual...