An I/Pro spokeswoman said the move was Mr. Poler's decision.
Mr. Poler, who developed the I/Pro concept while at Stanford University, has weathered a rash of criticism since the company was founded last year. Though one of the best known Internet measurement companies, it has struggled recently with being able to provide data in a timely manner.
I/Pro also recently scaled back its I/Code effort, which would have created a way for Internet users to register once online and then use their I/Code to indicate their presence at various sites. The system, which had several false starts, never caught on. I/Pro now is looking for partners to help it get the concept off the ground.
"Now that we have an experienced management team in place, we concluded thatthe best role for me at I/PRO was as a board member," Mr. Poler said. "Ihad been less and less involved with the day-to-day operations of thecompany over the last few months, so this is not that big of a change. Iwill continue to be quite active as a director and major shareholder."
"Ariel has been planning this for a while," said Stephen Klein, VP-marketing. "He's a visonary; there are lots of other things out there that he wants to do."
I/Pro by monthend will unveil a new version of its I/Count basic Web measurement service, Mr. Klein said. The company also is working to revamp its offerings into one service capable of generating a variety of reports. The service would still be marketed in conjunction with Nielsen Media Research, I/Pro's current partner.