Market Share by Top Websites

1 Act-On is leading in Top 10K Sites, Top 100K Sites, Top 1M Sites and The Entire Web.

2 In terms of market share, Topsy is clearly lagging behind, losing to Act-On in all segments.

Websites Categories

1 Topsy has better usage coverage in more websites categories. Including People & Society, Arts & Entertainment, Shopping, News & Media and 106 other categories.

2 Act-On is leading in Business & Industry, Computer & Electronics, Software, Internet & Telecom and 87 other categories.

Geography

1 Act-On is leading in most countries, including United States, United Kingdom, Canada, Netherlands and 77 other countries.

2 Topsy is leading in Brazil, Russia, Japan, Portugal and 52 other countries.