Gone to seed...

I'm terribly confused. A good percentage of the overseas blogs (in US of A) I follow are all talking about going through, and ordering from, seed catalogues. Now, I've been growing vegetables seriously for the past 3 - 4 years, and the only seeds I ordered last year were my first ever planting of broad (fava) beans, heirloom tomato seeds and the Franchi Sementi purple and yellow beans.  And the