... to post an ad on the local ad board, photos in the weekly photo thread here, and/or photos on the TER Photo board. It's like making a post in a discussion thread, but adding a photo link (and that's not even required for an Ad).
It's also a good idea to contribute here as OldRanger suggested, but... what if the provider's handle isn't linked to her profile yet? If not and you want to do that, there's clear directions in the 4th paragraph of the linked post.
To post an ad, just go to the Minnesota Ad board (https://www.theeroticreview.com/discussion_boards/messageList.asp?boardID=82) and click New Thread. Be sure to read the guidelines for ads before posting your first ad (https://www.theeroticreview.com/discussion_boards/viewmsg.asp?boardID=33&Messageid=75544). I think it's a good idea to link your handle to your profile & reviews, if you have any, before posting an ad, so it's easy to get to that info.
And if you want to include a photo in an Ad or Photo thread, it needs to be on the web someplace first so you can include the photo's URL in your post. I mention it because it's a frequent question. I know many providers use Imagecoast to host photos but there's many other sites.
The best thing is, all of these marketing channels are FREE! Who doesn't like free?