Time to review the important components of a citation. Not only should you keep track of citations to make your life easier when it comes time to compose your list of references, if you need to track down a copy of an article later on having at least some of the citation details will make things a lot easier.
Words of advice: Before you commit a lengthy period of time reviewing your results consider a few things.
First, consider how many search results you retrieved. We all have different cut-offs but if you landed more than 100 refine your search further before reviewing them.
Second, if your results are not very focused locate one article that you like and review the subjects assigned to it. Revisit your search, either replacing your search terms with the ones from that article OR adding one of the search terms to your search.