Leila Geramipour, from San Diego, California, who contributed to online penman-monteith general [090604].

Luis Parra, from Winchester, California, who provided suggestions to improve The facts about El Niño [090514].

Lucía DeSoto Suárez, from Soria, Spain, who provided suggestions to improve enlinea thornthwaite [090508].

Kyle Sandera, from San Diego, California, who inspired Q & A on how much groundwater to pump [081206].

Alberto Choquecota Riva, from Puno, Peru, who suggested onlinedo [080929].

Carlos Rodríguez Amaya, from Bogota, Colombia, who suggested areas of expertise [080902].

Vittorio Bovolin, from Naples, Italy, who suggested onlinechannel05 [080721].

Ryan Kunkel, from San Diego, California, who provided suggestions to improve online calc [080513].

Gary Player, from Cedar City, Utah, who inspired The facts about groundwater sustainability [071125].

Roberto Alfaro Alejo, from Puno, Peru, who provided suggestions to improve Search/Index [071016].