After performing a small update of the ZeList Monitor platform, on 12.08.2011, we are now also able to show, on the “Mentions” page, the number of unique sources by which the monitored expression has been mentioned, as you can see in the picture below.

For example, the expression “ZeList” has been used 515 times in the last 30 days, by 226 unique sources (a source may mention an expression more than once and the system groups all those mentions).