Trendrr
Real-time social & digital media tracking.

Features:
Trendrr uses comparison graphing to show relationships and discover trends in real time.

Pros:
Searches and charts may be run on any key words, account, or topics. Categorized areas of search on more than Social Network sites and platforms. Site is built out with a user community of it’s own. Firefox add-ons, sharing capabilities. Consulting and account management offerings.

Cons:
Interface is a little confusing.

Pricing:
10 Free Searches, Gold $49/mo, Premium $250/mo, Elite $999/mo