Nextag ROI Optimizer
3 websites

Nextag ROI Optimizer is free to use

http://nextagsellers.blogspot.com/2010/02/roi-optimizer.html

2 Feb 2010 ... The ROI Optimizer is one of the most important features that you can implement to understand the performance of your account. What is it?

VS

The Search Agency
3 websites

The Search Agency costs money

http://www.thesearchagency.com

The Search Agency provides an integrated suite of pre-click and post-click online marketing services including search engine optimization, search engine marketing, conversion path optimization, comparison shopping management, social media, ...

Market Share by Top Websites

2 In terms of market share, Nextag ROI Optimizer is clearly lagging behind, losing to The Search Agency in all segments.

Websites Categories

1 Nextag ROI Optimizer has better usage coverage in more websites categories. Including Lifestyle.

2 The Search Agency is leading in Jobs & Career.

Geography

1 The Search Agency is leading in most countries, including United Kingdom.

2 Nextag ROI Optimizer hasn't got a lead over The Search Agency in any country.