Topsy.com, launched last week, is a brand new search engine focused exclusively on Twitter content. Like Google, it presents its results based on popularity metrics, namely the popularity or influence ...

LONDON (Reuters) - Twitter and Russian search engine Yandex have agreed a partnership that will allow Yandex to show new tweets in its search results almost instantly, as Twitter becomes an ...

A start-up called Perplexity shows what’s possible for a search engine built from scratch with artificial intelligence. By Kevin Roose Kevin Roose used the Perplexity search engine for several weeks ...