can a provider post a ad on here

While ads are not allowed on the newbie board, weekly ads are allowed on TER's regional boards.

You can announce your availability in a post once every 7 days on you local board.  This post can include pictures and your contact details.  You can also include a link to your ad posted on one of TER's sponsors, Cityvibe and backpage.com.  You can also post a link to your own website, provided that you display the TER badge or banner on one of the first two pages of your site.