How often do you receive Requests from Integrated Asset Services?

I signed up with Integrated Asset Services about 2 months ago and have only received 2 BPO requests from them.  Each time they have called me directly asking me if I would be interested in doing an Internal BPO.  I have accepted both of them and deliverd the BPO on time.  They have come back with questions and have asked me to update some of the information and I have done so in a matter of minutes.  My question is, How often do you receive BPO requests from Integrated Asset Services??  Should I be getting more requests from them?  Each of the requests that I have performed have been 2nd BPO requests.  I have never received a 1st request. 

Also if you have done BPO requests for IASReo have you received listings as a result of the BPO that you performed.

Any thoughts would be helpful. 

Thanks in advance.