It's always nice to see public postings of thanks for specific people for reasons.. Khaled probably gets hundreds of e-mails thanking him for one thing or another, but the general public usually hears nothing about them.
Khaled's generosity has not only helped people with free registrations, as you received, but has also helped people who have nothing to do with mIRC, and, in some cases, people that would be lucky to be able to get access to a shared computer (ie: those living in 3rd world countries)
You can see more details regarding this by reading through
mIRC News and looking for the keywords "Charity Appeal"
