The editing interface used by the editors is very simple. A small editing icon is present near all fields they can edit and by clicking it a window pops up which allows them to set the new value. Every item edited generated an immediate tweet on @ColnectEdits. Seems that due to the volume of edits, Twitter no longer indexes any tweets by @ColnectEdits.
An important improvement of the interface has just been announced and accepted with enthusiasm by some the editors. Using JavaScript, the page is no longer reloaded after each edit. It's a simple change but saves editors a lot of time and thus encourages them to do more edits. As it's not so complex to implement, I wonder why much great endeavors than Colnect, such as WikiPedia have not yet something similar (or better).