How can I use the API to search for answers containing particular text or with particular properties? For example, this link allows me to search for is:answer foo, that is, answers containing foo. Can ...
I was wondering if there is a feature in the API that I could use to retrieve various features of a question on the Stack Exchange network when I know the actual URL of the question.
For my app, I allow people to "register" themselves on my site by typing in their Stack Overflow (etc) name. Now it does allow you to use your ID if you know it, but I find that typing in usernames is ...