In terms of market share, Social Dot Com is clearly lagging behind, losing to Visible Measures in all segments.
Social Dot Com has better usage coverage in more websites categories. Including Business & Industry, Internet & Telecom, Finance, Marketing & Advertising and 23 other categories.
Visible Measures hasn't got a lead over Social Dot Com in any websites category.
Social Dot Com is leading in most countries, including United States, United Kingdom, Sweden, Turkey and 6 other countries.
Visible Measures is leading in Russia and Netherlands.