Here are a few 'vote for me' icons to place on your store if you are participating in Shopify's twitter contest

To link to your contest page, use http://win.shopify.com/sites#http://www.mysite.com and replace http://www.mysite.com with your site's url. You can also use the bit.ly link associated with your site.

If you are a designer you can grab the png of all icons below right here. The original twitter bird icon was designed by the fine fellows over at DryIcons.