10 Great Online Tools to Identify Trends

1. Google Trends – Google Search Trends
2. adCenter Search Volume Seasonality Trends
3. adCenter Keyword Forecast
4. Facebook Lexicon – Facebook Social Trends
5. Twist – Trends in Twitter
6. Trendpedia – Blog Trends
7. BlogPulse from Nielsen – Another Blog Trends Tool
8. Trendrr – Trends across Social Graphs and Networks
9. Google Checkout Trends – Online Sales Trends
10. Indeed Job Trends Tool


Reference: http://www.rockyfu.com/blog/10-excellent-online-tools-to-identify-trends/