Some interesting findings about limited-service (reduced commission) Brokers can be found here- http://www.inman.com/hstory.aspx?ID=46077
Here is one paragraph from the article:
“While all real estate commissions are negotiable, there are real costs to marketing a home, said RELO CEO Pam O’Connor. If real estate professionals are not compensated accordingly, shortcuts will be taken that can affect the home’s exposure to potential buyers, she added, and ultimately, its marketability and/or the price it commands. When home sellers focus on saving commission dollars by working with a limited-service broker, that discount may in fact cost them much more in the overall transaction.”
If you want my opininon on the subject…I see shortcuts being taken when homes are being marketed by agents taking the larger commissions too!