People register several times because of registration fails
Too many fields
Sad and boring UI/UX
Too many "security" checks (Tiki looks bad)
Tiki Captcha has issues
The process has to be manually approved
How others handle it ?
We have to focus on other collaborative platforms to compare.
Most of them follow what is the standard today.
Very focused screen without too much of noise (in some cases centered modal)
In some cases short messages about the delivered value on registering, community ambiance (smiles, people, etc)
Short form with 2 to 3 fields max
Provide Facebook or OpenID login as an alternative