Finally, we have an Alexa Toolbar for FF… and it’s way better than it’s IE counterpart.
The trends, reach and traffic rank are displayed on the bottom right part ( on the status bar) and the Related Links pop out as an extra menu item. I wonder why they still call it a ‘Toolbar’ 
Sparky Features:
- Related Links: Find sites that are similar to the one you are currently visiting.
- Traffic Trend: A sparkline showing the traffic trend from the last four months.
- Reach Meter: A neat little indicator that shows the site’s Reach.
- Traffic Rank: Shows the current site’s Alexa Traffic Rank.
