Pretty sure the answer is no, but I thought I'd ask. Would be great to search for a specific fetish or service or whatever by seeing what people are writing rather than using the checklist.

Some have suggested that a simple, flat text search would be simple and efficient to implement and use very little computer resources.  
http://www.theeroticreview.com/discussion-boards/suggestion-and-policy-4/how-about-a-general-or-flat-text-search-15330
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That would make it possible to search Reviews (as flat text), emails (PMs) as flat text, and so on.  
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Come to think of it ... the existing Search tool on the Discussion Boards has been broken for quite a while. The two options are "All these words" and "Any of these words".  Whenever I enter more than ONE WORD, I get zero hits from either search. That is, a search for "either" will find this post; a search for "search" will find this; but a search for "either search" (Any or All) will return zero hits.

and I really wish TER would fix it.  

 
I wonder how many times Fuck You has been used on these boards, but a search for it yields NOTHING. lol

That's because it's a lexeme search,not a full text search.

 
You search by lexeme. There's no lexeme such as "fuck you", but there are two like fuck and you, it also recognizes "you" as part of the word "yourself" and "you" unfortunately is too common and part of other words.  

 
However, if you have distinct, unique lexemes, there is an easy way to search them in a phrase.  

 
Don't believe me?

Enter fuck+hookers without quotes and select all  these words. You will get only the results where "fuck hookers" was used together.

If you enter fuck hookers with no plus sign (it doesn't have to be a plus sign, any non-space delimiter such as %, * or comma will do) , you will get results of all messages that have the words fuck and hooker in body.

 
Unfortunately with common lexemes such as "you", "is" and so forth this will not work. Fuck+you will still give you results such as "you're a boring fuck"