"I would like to thank you for giving me the opportunity of placing an ad on your site.
It has enabled me to get in contact with family of mine after 34 years.
Things between us are still delicate, so please keep names confidential.
Again, many thanks, S.
"Thank you so much. I did locate my friend.
We have been back in touch over the last several days.
Thank you again.
"Hey, from Canada! I placed an advert looking for someone from Luton on the Exchange, and I found him thanks to your site.
Thanks! N. Chisholm