On 17 Feb 2009, at 09:01, Mark B. wrote:
A response from Luis von Ahn of reCAPTCHA:
"Some of our big customers have done A/B tests that show that using
reCAPTCHA does not change conversion rates for them. In general, if
[snip]
Of course folk visiting "big customers" may be willing to expend more
effort than when they visit other sites.
I know I've struggled through CAPTCHA's for Google/Yahoo coz I
_needed_ a bit of functionality. Other sites I just skipped out the
third time I got it wrong because I'm doing competitive shopping and
the three other stores I'm looking at don't ask me to jump through
that particular hoop...
It's a barrier that doesn't help the user. It just helps the site.
That tells me I should be trying to remove it when ever I can.
Cheers,
Adrian
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