I've been pondering this question since restructuring my site and have yet to come to any conclusion, so decided to poll you fine Bostonians.  

If anything it helps to get something nice for the lady without having to ask, which can be somewhat awkward at least for me.  

I totally agree. I'll ignore the section if I don't intend to get you a gift. But if I see a lady a few times and like her , I'd like to get her a surprise instead of asking her.. Did that once and I liked the response I got.. So its a good idea to have that section.
r

Generally, I think it helps, though the devil is on the details..  The P411 profile, where favorite drinks, perfumes, and flowers are listed, is also informative.  I may want to buy a modest gift, and knowing the woman's tastes is helpful.

Hey Sara!  I am most impressed by the ladies who ask for donations to worthy causes or charities.  Modest gifts are fine, but requests for cars (I was going to say Bentleys, but thought better of it!), diamonds, etc., even in jest, seem a bit excessive.  A smart guy will figure out an appropriate gift on his own.

It is pointless to bring a gift that won't be appreciated, and giving out clothing sizes makes for practicality.

And how are we to know whether you like flowers, candies, or other items that some gals love and others detest?

I agree with others to skip the Ferraris.

I mam very generous, but I have yet to deliver my ist Jimmy Choos...........

Red or white wine? Most probably prefer a Jackson or two for a well delivered hour!

Wish-listing a perfume preference will strongly suggest your routine use of fragrances. The third greatest risk to a hobbyist is the S.O. detecting fragrance residues on his clothing.