It's the only one with trends that actually appear to be growing quickly as I think they do a large amount of scraping of discussion forums. They also do an ana

It's the only one with trends that actually appear to be growing quickly as I think they do a large amount of scraping of discussion forums. They also do an analysis of why it's growing. There's a different one, exploding topics, too which shows google searches that tend to be growing but quite a bit more slowly.