There are two ways to approach this either the nice and subtle way or the direct way. Sometime being too forthright may come across as too aggressive or immature, whilst at the same time weed out the pretenders from those who are more open minded. At the same time if I take the subtle and nice route I could spend forever online and never meet in the real world, waste my time and energy pursuing people with different goals. I am sure you know exactly what I mean by this, correct?
Here is a nice approach: If I looked at your profile and sent a note your way, understand it is based off your answers to the questions section or comments you added there, personality results, and how & what you wrote in your profile. All of which gave me a hint you are looking ultimately for something more, but for whatever reason are having trouble finding "Mr. Wonderful." What your profile may says if different than what you want in the end or shows you are open minded about the subject at hand.
Here is the more direct approach (if you will): No BS here I am looking for like minded women who are open to a friendship for great and intellectually stimulating conversations on various topics and subject matter, and sharing close togetherness time to help meet each others needs.
Of course if you really want the brutal upfront approach it is inline with "Friends with Benefits." Or a variation of it, not for just a one time casual fling, rather a recreational together time.
If you want love and have no interest in any of this, I wish you all the best in your journey. If however, I have sparked any curiosity, feel free to respond. Thanks.