Everyone likes free schwag from popular web services. Del.icio.us, the popular social bookmarking service is giving away free stickers and bookmarks (for books!) as a limited time offer and you can grab this offer to get some free del.icio.us stuff.
Announcing the free schwag, they suggest you mail a self-addressed stamped envelope to the following address and they send it back all filled up.
Yahoo! Inc., c/o del.icio.us, 2821 Mission College Blvd.
Santa Clara, CA 95054-1838
The offer has a bonus deal put in. If you send in a useful and amusing comment or suggestion about del.icio.us, they might include a del.icio.us t-shirt too!