I've been crocheting for years - my grandmother taught me when I was about 8 years old. I prefer yarn rather than thread, and generally make afghans most of the time.
I got involved with a group called Heartmade Blessings several years ago, which gives handmade afghans to people who've lost a loved one or suffered some other type of tragedy or hardship. Volunteers make squares and send them to volunteer assemblers, who create the afghans. Each afghan contains squares from many different people. Through my involvement with Heartmade Blessings, I began designing square patterns, and have a website with a lot of free patterns - mostly for 12-inch afghan squares:
Yarncrazy Crochet World