While Twitter’s performance is leaps and bounds above their previous “fail whale” days, it will only get faster. In a blog post yesterday, the Twitter engineering team announced that they have reviewed their entire technology stack in a mission to optimize the site’s speed.
One item that you will see noticeably absent moving forward is the hashbang (#!). The hashbang is being phased out due to limitations and bloat. So instead of seeing URLs like:
The address will now look like:
For more information see the official post on the Twitter engineers blog.