@mutlu82 are you referring to the presentation (with parentheses/brackets) or the notification itself?
Title bar notifications that update in real-time are a lightweight way to pull people back to the site that leave it open in another tab. Changing the favicon is clever and probably more noticeable. Some take it a step further and trigger a sound when that number increments (e.g. Facebook when you receive a new comment on a post).
@rrhoover Yeah I mean the presentation of them, I use to notice a lot of sites use the method of Tinycon but gradually it seems to be the more along the lines of Facebook and display it like (this)
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