Thanks for all the input. Yes, there are a lot of ways and means and
issues that can be considered (thanks Simon), but this project will use
a simple captcha, mostly because it is familiar to users and "fits" with
the project. Yes, I've found some options via google, but was more
inquiring to see if you all had success with certain open-source
I haven't used google's version, but the problem I have with using
google API's is that there can be delay's in page loading (in my
experience). I don't generally like linking to 3rd party API's when I
can help it.
Ashley, I've used some of your techniques before within projects where
those types of things "fit". One I thought about recently is displaying
an array of colors in random order and asking the submitter to choose
their favorite color from the list. Perhaps not fool proof, but nice
Anyway, for this project, I think I need a familiar captcha.
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