During the week of January 31st fill up a plastic grocery bag with some trash on the way to work. The person who fills up the most bags by Friday will get 500 cred, giving them enough cred to sponsor the next Spark. Just email a picture of your bag of trash (geotagged preferred) to spark@artefact.com and you will get 10 credibility points up to two times daily. Your picture will be visually analyzed and authenticated.