CiteULike - An online service for the management of the papers you read

CiteULike ist ein Online-Service, mit dem es möglich ist, online gefundene Artikel (insbesondere wissenschaftliche) zu archivieren und durch die Archive anderer Nutzer neue hinzuzubekommen.
An interesting way to store your papers online is CiteULike. You can also use tags for identifying articles and for sharing them with others (at least, if they have access to it).
I think it's an interesting option if you work in a group and want to share documents.