Do people actually ever meet and go on dates from this site?
Yes, but my guess is that in most cases these are LD relationships because in most areas this site does not yet have the numbers to allow much for choices of partners or compatible matches.
A better question may be what percentage of people find a date on this site:
perhaps post a poll with
Have you gone on a date via this side?
1: Yes (many good experiences)
2: Yes, a few times
3: No, but hoping to find someone on this site
4: No, I do not expect to ever go on a date with the help of this site.