A team of Queensland volunteers will scour neo-Nazi and other far-right or anti-gay web forums to monitor conversation around same-sex marriage and report those who overstep legal boundaries during the postal survey period.

The LGBTI Legal Service will run a project named Like Love, involving training and co-ordinating volunteers to monitor online forums, media and posters to ensure accountability where unlawful vilification may have occurred.

The Like Love project will run during the same-sex marriage postal vote over the next two months.

The Australian Bureau of Statistics' same-sex marriage postal survey began arriving in letterboxes this week, with the result to be published in mid-November.

LGBTI Legal Service president Matilda Alexander said vilification had increased on social media and in posters and there was a need to educate the community that certain forms of speech were unlawful hate speech, not justified by freedom of speech provisions.