wobiao.com, a creative idea similar to "Million Front Pages", but unlike selling grids, they only sell tags for 50 yuan per character. You can also customize the color using a WYSIWYG editor. It has its own characteristics. Their slogan is: "Have you 'biao'ed today?!" Even more interestingly, they encourage visitors to say this phrase in local dialects and leave comments. There are many links to charitable organizations on their site, and they offer free tags to charity websites.
http://www.wobiao.com