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What is a TextCHA?

It is a pure text alternative to CAPTCHAs. MoinMoin uses it to prevent wiki spamming and it has proven to be very effective.

Features:

• for page save, ask a random question
• match the given answer against a regular expression
• q and a can be configured in the wiki config
• multi language support: a user gets a textcha in his language or in language_default or in English (depending on availability of questions/answers for the language)

Tips for answering:

• you need to answer the textcha for e.g.:
  • page save
  • attachment upload
  • user profile creation
• you do not need to answer the textcha for e.g.:
  • page preview (if you do, it will remember what you entered, though)
  • user profile changes
• it is usually a simple/short answer
• it compares case-insensitive
• sometimes you can find the right answer by reading some important pages of the wiki