Adknowledge
3 websites

Adknowledge is free to use

http://adknowledge.com

Adknowledge is an online advertising company that seeks customers who are looking for ad solutions beyond Google, Yahoo and Microsoft. Adknowledge operates an online marketplace that allows advertisers to bid for traffic in websites, email ...

VS

Interpolls
2 websites

Interpolls offers both free and paid options

http://www.interpolls.com/

Founded in 1999, Interpolls is a pioneer and leader in rich media and next generation advertising technologies.

Market Share by Top Websites

2 In terms of market share, Adknowledge is clearly lagging behind, losing to Interpolls in all segments.

Websites Categories

1 Interpolls has better usage coverage in more websites categories. Including Community & Society and Home & Garden.

2 Adknowledge hasn't got a lead over Interpolls in any websites category.

Geography

1 Adknowledge is leading in most countries, including United States and France.

2 Interpolls is leading in Philippines.