@proceedings { 6039,
	title = {Friend or Follow: Activities for generating social reputation in Twitter},
	year = {2009},
	address = {Lengerich},
	author = {Preussler, Annabell and Michael Kerres},
	editor = {Kr{\"a}mer, Nicole C. and Sobieraj, Sabrina and P{\"u}tten von der, Astrid M.}
}
