Almost every career websites allow you to save your job searches and add them to Google Reader (or to our favorite: Feedly!). On Indeed, all you have to do is go to the bottom of your results page and click on the big RSS feed orange button. After creating an account on Monster, you can do the same thing by adding the RSS feed of the job offer.
We all have companies we dream to work for. These companie's websites we check everyday to see if there is a position available. If this company has an RSS feed for their job offers, add it to your reader. If there is none on their website, there might be one on their Twitter account. All you have to do is create a category for this company and check out the offers directly from Google Reader or Feedly.
Once you have gathered all your research and job offers in one place (Feedly for example), you can start sorting them. Most of us have skills applicable to many positions (for instance: marketing manager and community manager). Sorting out by job type is a great way to keep things organized.
This way you can focus at the same time on positions with similar demands, and adjust your resume and motivation letter accordingly. After a while, you will start to notice how some job offers all use the same keywords. Don’t hesitate to use these to strengthen your resume.
The best thing about using RSS feed is that once you’ve set it up, you can analyze job offers in your reader from anywhere with an internet connection (even from your mobile). Use your phone to search for jobs in the train, while you’re waiting in line, or ordering coffee. You will be able to find offers quicker and win a precious time.