Although there is no requirement in the SOTA scheme for confirmation of contacts by QSL cards, some chasers apparently do like to exchange cards. A few even QSL for each and every summit worked!!!
I do answer all QSL cards immediately upon receipt, but I am only just beginning to receive cards via the RSGB Bureau for activations in 2009. Please be aware that it takes three years or more for QSL cards to reach me via the bureau … and it probably takes just as long again for the reply to reach you!
If you must have confirmation of a contact, please use eQSL.cc if possible. That way, you will get an instant reply.