Avvo’s fee-based client-lawyer matching service, Avvo Legal Services, ended this month.But the question of whether lawyers should split fees with for-profit matching services remains for bar associations in several states, including Illinois, where ethics rules restrict fee-splitting between attorneys and non-lawyer, for-profit entities.Jerome Larkin, administrator at the Attorney Registration & Disciplinary Commission, said the issue of fee-splitting with non-lawyer, for-profit entities was raised when Avvo, a …