Washington DC
Sometimes you have to make a little bit of a board presences for others to recognize who you are; its just the nature of this hobby. Information should be free, but it should also be "deserving" 
Not a big deal to me since I exchange information EVERYDAY But JustLayingLow does have a point.
I checked the regional ad boards in Maryland and Washington D.C. and typed in the word "squirt" in the search box and have a day range of 1000 to 0. If you want recent ads, then narrow you day range to 30 to 0 for a 30 day recent ad results. Below is what I found even though it may not be current; at least you have a list for future references; and there seems to be an adequate list
----------------Maryland Regional ads for squirting providers
http://www.theeroticreview.com/discussion_boards/searchMessagesResults.asp?FromPost=1&MessageID=&BoardID=80&SortBy=DateCreated+desc&Search=squirt&SearchType=1&Author=&DayFrom=1000&DayTo=0
----------------Washington D.C. ads for squirting providers
http://www.theeroticreview.com/discussion_boards/searchMessagesResults.asp?FromPost=1&MessageID=&BoardID=102&SortBy=DateCreated+desc&Search=squirt&SearchType=1&Author=&DayFrom=1000&DayTo=0
Samantha at Diamond Escorts just about drowned me with her squirting while sitting on my face. If you book her, PM me and I will tell you what I did to her that got her squirting (that wouldn't be allowed here on the forum).