In terms of market share, ReferLocal is clearly lagging behind, losing to Unicast in all segments.
ReferLocal has better usage coverage in more websites categories. Including Business & Industry, News & Media, Tourism, Travel and 7 other categories.
Unicast is leading in People & Society and Performing Arts.
ReferLocal is leading in most countries, including United States.
Unicast hasn't got a lead over ReferLocal in any country.