EW distribution of faint-continuum line emitters. We show sources with Hα luminosities between 10⁴⁰ and 10⁴² erg s⁻¹, i-band magnitudes >20, located within 4500 kpc from the cluster center. Merging clusters host faint-continuum line emitters, especially those with bright emission lines, at a higher rate than relaxed clusters.