Twitter’s search engine just got a lot more powerful. It’s long been a helpful tool for real-time search, but now it’s going to be a lot better at finding historic content.
The company announced today that it now indexes every public tweet from the past 8 years. This functionality is rolling out to users over the next few days.
It's a fairly simple engine: you search through words and hashtags to find what you're looking for. You can search a date range as far back as you'd like. This has always been possible, sort of, through services like Topsy and of course Google, but Twitter's made it faster and easier and far more reliable than ever.
Twitter Blog