I use tail -f mainly for tracking something end-to-end through multiple log files because it's pipeable to grep or awk, where less is not. less +F is cool too,

I use tail -f mainly for tracking something end-to-end through multiple log files because it's pipeable to grep or awk, where less is not. less +F is cool too, but tail -f is more useful when doing complex log analysis on the fly because it follows standard UNIX I/O behavior.