I in no way mean to make males feel unwelcome in this survey. All voices are welcome. However, I do feel that it is worthwhile to specifically encourage females to answer. Here is my reasoning below

Say 100 people respond to the survey. At only 8% female users, we are only going to have 8 female answers. If we want to know how females came to find the site, this isn't a very good sampling size.

I understand that this may upset some readers, and am sorry for this fact. I have set up a survey above, and if either the majority of respondents OR at least 15 people are upset by this, I will take down the phrase referring to gender in the OP.