Best captcha so far for a blog

[wlanboy]

Without many words: (from adafruit.com blog):

 

[MartinD]

Quite liking that!

 

[AThomasHowe]

That's pretty cool!

My fave captcha so far is probably having "sudo make sandwich".

 

[heiska]

My favorite:

 

[wlanboy]

My favorite:

Nice one!

Black: E3-C5

 

[iClickAndHost]

My favorite:

That's awesome!

Is it an actual game in progress? 

 

[definedcode]

That's really cool.

 

[MannDude]

Regardless of the method, don't make me re-enter all my information when I inevitably fail the first attempt(s).  -_-

 

[5n1p]

Saw this today:

http://www.geee.net/contact.htm

 

[peetscott]

I kinda like all these interactive bot protections...

this is also cool : http://areyouahuman.com/