Citation is pivotal to research success, and influences your decision about where to publish. The significance of research is measured by how often it is cited, and where. Analysing publication data is a field of research in itself (bibliometrics).
Some issues around citation:
A paper in an influential journal is more valuable to you than several publications in less prestigious journals. Always aim to submit your research to the most highly regarded journals in your field.
Further information on bibliometrics can be found in the Research Metrics guide.