❶ Create a graphic (200 x 200 max size) to represent your personal "candy". It should have your username on it, but otherwise can feature whatever you want. Make it something special since it's self-representative.
➋ Make a post with the subject "trick or treat?". Put your "candy" somewhere in it, and be sure to repost these instructions.
➌ Then, go around other people's LJs and reply to them with either "trick" or "treat". If you reply with "trick", they will give you an LJ dare that you have to perform before taking their candy. If you're too wimpy for that, simply say "treat" and take their candy.
➍ List all your collected candies in your original "trick or treat?" post to show off your collection, being sure not to direct-link!

for your posting convenience~mind ALL of you I may or may not be too lazy to think of a dare if you bother going "trick" to me :/ ...yeeeaaahhhh /sigh I wanted to put just "peachy" but SURPRISE someone actually has that for their journal...yeah go figure
also, i don't understand this whole.."direct-linking" thing...I don't see the problem with having it link to my trick or treat post for convenience sake...sooo yeah. Mine shall have a link. YEAH.
edit - yeah fixed the code in the box, just code to post the candy now for copypasta convenience