Ok I am way, way catching up here...
@Matchedandmuddled 20% is a terrific return in terms of contact/interest ! Unless it's completely different for blokes of course.
I agree with @StealthNinjaMum the favouriting thing on Match is hard to fathom. You can do it accidentally by hitting the star on someone's profile. Or if you're doing the shuffle (stop sniggering at the back) you can hit the green tick to say you'd like to match with them, and that actually adds them to your favourites. Those selections expire I think, so next time that person comes around, you hit the green tick and go again. When I started on Match I thought favourite was a bookmarking operation so I would go hmm, nice profile, fave ... carry on reading. It took a few weeks before I was favourited and realised it sends a message through to the recipient of the favouritism. Yes, I am a bloke, and I don't read the instructions.
Oh and the other thing about favourites is that it very much allegedly (as I've seen no evidence of this) helps Match's algorithm understand your preferences so that it can email you the relevant (new) profiles you could be interested in. So apparently, worth fav'ing even if you don't think it's viable for some logistical reason.