Use RSSOwl to track the world cup (or any other topic)
Searching across News
The fastest way to get some results is by searching across all news you are subscribed to (Edit | Search News). Just type your topic and see results below.
If you are interested in search results for a particular topic, you can actually subscribe to this search as if it was a feed (File | New | Saved Search). Saved searches take a search and make it available from the feeds list. Whenever unread news come in and match your search, you will see the counter going up for the search.
Finally, with news filters (Tools | News Filters) you have a very powerful tool at hand to define custom actions RSSOwl should perform whenever an article matches your search criteria. For example you can choose to be notified whenever an article talks about the world cup. Overview section.