The invention concerns telecommunications methods and systems, and more particularly methods and systems for enabling respondents, who may be potential customers, to respond to advertisements for items (goods or services) advertised by or on behalf of advertisers. Telecommunications methods and systems of the invention provide selective communication routing or forwarding to advertisers of communications made to anonymous contact identifiers selected from a pool of anonymous contact identifiers, each anonymous contact identifier able to be allocated to an item to be advertised by or on behalf of the advertiser. The anonymous contact identifier is a public telephone number or an email address, for example. The service is provided by way of hosted system for use by a plurality of advertisers. The invention has particular application in the area of classified or personal advertising in printed or online publications, such as for real estate, automotive, travel or job advertising, for sale or auction item advertising, or for dating agency advertising.