By using our Amazon Affiliate link (especially during the impending synchronized gifting season) you can contribute to HacDC every time you order from Amazon.com. This will set a cookie that will persist for 24 hours or until you use another organization’s affiliate link.
If you want to always donate a portion of Amazon.com purchases to HacDC, a browser plugin (Firefox | Chrome) can automate this for you and make it permanent until you change settings or disable the plugin. Use tag hacdc-20 in the plugin settings for USA. Those who use Amazon Smile can also assign part of the sale to HacDC by updating their Smile settings to support “Hacdc.” A combined affiliate + Smile URL would include: https://smile.amazon.com/?tag=hacdc-20
This is not an endorsement of Amazon.com over other on-line retailers. Shop around for the best deal or shop at stores you’d like to support. If you choose the latter, you can still donate to HacDC in other ways! 🙂
EDIT 4/10/15: Updated Chrome plugin URL. Added information for Amazon Smile.