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Firefox23 To we ask also correspondence.
1) It frequently places itself at the end of "statusbar" icons regardless of user customization
2) Unfortunately here is no any integration nor with standard nor URL Tooltip generated tooltips
3) No appearance customization
4) writen by previous reviewer
Anyway 4 stars (but one in credit)
upd: credit star cleared
for a better way to get the link the mouse is over.