Hello :-)
I'm a Social Psychology Masters student at Sussex university in the UK looking to study swap with other research students who need participants. I noticed that study swapping is one of the best ways to get willing participants so I have made a webpage where students can swap study details, here you can post your study link and do lots of swaps to get more participants. Most studies are online so it's a great way to get those participants you need really quickly! The web page has no advertising or sales, it is just for research students to study swap for participants, you can have a look here: http://www.participantexchange.co.uk/
And if you find it helpful don't forget to my study and let me know so I can do yours too! I'm looking for regular drinkers in the UK. You can take part in my study here: https://www.lifesci.sussex.ac.uk/research/psylab/ecg1/index.php
Many thanks and good luck with your research!
Emily :-)