The advanced search, as it name would suggest, gives you more fields with which to refine your search.

Whilst you still have all the basic search function criteria, you now have the ability to search by sexuality, age range, ethnicity and build. You also have the ability to screen for people that either smoke, drink or both. These extra parameters give you a lot more control over the results you are shown, really enabling you to pin point the kind of members you're looking for.