Past posts by me of relevance to an unconditional basic income

http://heikoheiko.blogspot.com/2010/05/my-preferred-economic-and-tax-policies.html

http://heikoheiko.blogspot.com/2010/03/how-fair-are-markets-in-determining.html

http://heikoheiko.blogspot.com/2010/02/guaranteed-basic-income-and-marginal.html

http://heikoheiko.blogspot.com/2010/02/basic-income-and-marginal-tax-rates.html

Additional recent thought:

It's not just the end state that matters, but also how to get there from the present system in place. One of the easiest things to do I think is to keep child benefit non means tested and to fold some other child related benefits into child benefit, eg in Germany the allowance paid to parents for taking time off work in the first year after a child's birth.