In this paper, we shall introduce the problem of free-text-tagging of online news archives. From an application point of view, it has many benefits for online news portals and on the other hand, the task has unique characteristics compared to existing approaches for free-text-tagging. We shall describe our system, which was developed for the archive (consisting of 370 thousand articles) of the most visited Hungarian news portal www.origo.hu, along with research questions encountered and solved during our task. As the evaluation of tagging is not straightforward at the end of the project the news company manually investigated the tagging of the automatic system which yielded an F-measure of 71.9.