Example 1:

Please specify the main reason for attending this conference:
 Content
 Personal growth
 Speakers
 Other, please specify: 

Example 2:

What Internet search engine do you use?
 Google
 Bing
 Yahoo!
 MSN
 Another search engine: 

Example 3:

I like the ease of using CreateSurvey!
 Yes
 No
 Other, please explain: