Review of charm lifetimes

A review of the latest experimental results on charm particle lifetimes is presented. The most significant update is that the D{sub s}{sup +} lifetime is conclusively larger than the D{sup 0} lifetime and signifies that W-exchange/W-annihilation contributions are large. Using new high statistics data on D{sup +} {r{underscore}arrow} K{sup +}{pi}{sup +}{pi}{sup {minus}} together with the D{sub s}{sup +} lifetime and some assumptions, one can phenomenologically extract the strength of the W-exchange contribution in D{sup 0} decays and of W-annihilation in D{sub s}{sup +} decays. These are larger than or at the limit of theoretical expectations using QCD-based operator production expansion techniques.