Bonus Site: ASL Fingerspelling: Test your American Sign Language chops by watching online spelling demos and guessing the word.

附赠站点A SL Fingerspelling：通过观看在线拼写示范和猜单词，来测试你的美洲手语水平。

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As an added bonus this site also offers exercises to increase memory vocabulary creativity and stress management.

作为额外的收获，这个网站同时提供增长记忆力、词汇量、创造力和实现压力管理练习。

youdao

As an added bonus, this site also offers exercises to increase memory, vocabulary, creativity, and stress management.

作为额外的收获，这个网站同时提供增长记忆力、词汇量、创造力和实现压力管理练习。

youdao

And people who make purchases on the site through Nov. 30 will earn eight bonus points for every dollar spent.

WSJ: Card Issuers Reward Purchases

Bonus: Hipmunk did an API deal with Airbnb making it the only other site besides Airbnb to show Airbnb rentals, which are often a lot cheaper and more funky than hotel options.

FORBES: Why Hipmunk Is The World's Best Travel Site