Linking to urls with Query Parameters good for SEO?

[CrakJason]

Hey guys,

I am currently buying link ad spots on sites (hardcoded, not using ad networks).

I track the each link I buy and the sales they generate with query parameters such as : http://www.mydomain.com/?r=top_menu_nav_on_seomoz

My question is : do these links still pass link juice?

I have my canonical already set to http://www.mydomain.com

Also, in Webmaster tools I have it set to ignore anything after /?r=

The way I see it, a link is a link.  Naturally I would prefer to send directly to my root domain, however, these links cost a lot of money and I like to track my results.

Does anyone have experience with SEO and working with query parameters?

[SanketPatel]

Hi Jason,

You find awesome discussion on Banner Ads here :

http://www.seomoz.org/q/are-text-links-in-banner-ads-considered-the-same-as-paid-links

Hope this help you out....