How about to have an obligatory field while registering for the kind of Compiler?

Also this compiler field been shown along with the members info.
Yes, i already arranged this. If you look at the users profile and the 'about me' entry, you'll see the License status that they claim to have.

Ioannis, Try it on your profile you'll see that the information is available, if the user has completed the entry.

Once again, i did not publish this, as when i suggested it the reaction was rather negative. never the less, i think its a good idea to allow people to identify their Licensed status, if they so wish.