googling?
http://www.swagbucks.com/?cmd=sb-plugins
they say it comes with an uninstaller, likely to be in Applications/Toolbars/Swagbucks/
or run the installer, but don't click yes & use Installer-File-Show Files to get an exhaustive list...
it's another Conduit variant - these should cover most of it, they may not all be present.
HD/Applications/Toolbars/
HD/Library/Application Support/Conduit/
HD/Library/InputManagers/CTLoader/
HD/Library/Receipts/ctloader.pkg
HD/Library/Receipts/<Toolbar name>.pkg
HD/Library/Application Support/SIMBL/Plugins/CTxyxyxy.bundle (xyxyxy is some number)
HD/Library/ScriptingAdditions/ct_scripting.osax
HD/Library/launchAgents/com.conduit.loader.agent.plist
Home/Library/Application Support/Conduit