Also, have in search the ability to screen out profiles for which you are not in their desired range. (blog.seekingarrangement.com)
There was no real search function, and what little search ability there was happened to be fairly buggy. (visionriders.com)
PAID members will show up first in the search results, have advanced search ability, write reviews of your dates to be displayed on their profile and have the ability to delete them, vote on the best dates, etc... (trustedsingles.com)