I think I read this in a post on here somewhere, some people said that they've gotten at most 7 at a time (a limit perhaps). It depends on how many people have signed up for the day and whether or not they "matched" you in those 29 dimensions.
And what I've realized is that they come in spurts, if I remember I click the button, if not, I just let the matches come.
Good luck!
Thanks for mentioning that the most they give is 7 at a time! I've been on for a week, and have been getting 6 a day, with a 1 time exception of 7. I haven't tried the button yet, but now I won't bother....before anyone get jealous, only 2 matches have been from the city I'm in...the rest are at least 1 hour away, and most have ignored my first set of questions. Sigh.