In total, by combining structural, spectroscopic and theoretical data these and similar type other adsorption studies have provided detailed information on the atomic scale adsorption behavior of (locally) inhomogeneous bimetallic surfaces. This allows also to quantitatively evaluate the impact of structural and electronic effects on the adsorption behavior. Admittedly, the distinction between adsorption on different sites is more complex on surfaces where the differences in binding strength between different adsorption ensembles are less pronounced than in the examples discussed here, but it should nevertheless be possible also in such cases to identify trends.