Here is a simple AppleScript to use in an Automator Service to get LaunchBar to show the selected text in big type (like LaunchBar will do with phone numbers):

on run {input, parameters}

set theString to (“x-launchbar:large-type?string=” & (item 1 of input)) as string
log theString

open location theString

return input
end run
Just set up a service to take text from [...]