By reading the memories stored within the Zerg's intelligent individuals, the Collectors learned a great deal of information about the Zerg.
Through this, the Collectors learned the Zerg's territory and the coordinates of every hive planet. Though the information was not especially detailed, since the Zerg had no mathematicians or even a field such as mathematics, their star charts were rather crude by the Collectors' standards.
More importantly, the Collectors learned the star system coordinates of several Gate Worlds. As long as they seized the stargates within those systems, the Collectors would gain multiple gateways into the Gate Worlds.
Without question, this intelligence was of immense significance to the Collectors and to the entire species. The Collectors within the Kers star system immediately rallied their kin, digitized the intelligence obtained from the Zerg, and used stars to transmit information across light-year-scale distances.
Stars Flicker!
By constantly obscuring a star's light and making it appear to flicker without pause, they could transmit information this way. As far as starlight could travel, so too could the information.
Once information regarding the Zerg began spreading throughout the entire species, the Collectors in other star systems erupted into an uproar.
The Zerg were far too unusual. Their developmental path was the same as the Collectors': the genetic path. Like the Collectors, they possessed genetic modification technology, and they had even developed Leviathans comparable in size to mothership organisms.
Before learning of the Zerg, many Collectors had believed that no civilization similar to theirs could exist. The formation of Amoeba had been too unique and too difficult to replicate, while the entire civilization had to revolve around a single core. For a naturally formed civilization, such circumstances were too rare, too unusual.
Thus, most Collectors did not believe that another civilization similar to Amoeba existed.