We have been running different kinds of character challenges on Facebook for a few weeks, including several new ones. We have also started offering prizes (free Skritter) to some of the correct answers. See our Facebook page for more info:
https://www.facebook.com/pages/Skritter/39198748555
Here are some of the challenges:
1) Which character does not belong in this group and why? 狮、诗、虎、师
2) Guess what character this is a mnemonic to: "five mouths all speaking a different language"? (by Skritter user MK1977)
3) Spot the incorrect character: 你什么时侯要去中国呢?
Scroll down for the answers, but we of course encourage you to think long and hard before peeking!
Answers:
These are our intended answers, but in some cases there are many acceptable answers.
1) 虎 (different pronunciation)
2) 语
3) 侯 should be 候
If you want more, check the previous forum posts:
http://www.skritter.com/forum/topic?id=2386542296
http://www.skritter.com/forum/topic?id=1990493049
http://www.skritter.com/forum/topic?id=1640592406
http://www.skritter.com/forum/topic?id=1410719262