Please check if the feature has not already been requested.
If not, please describe it

Block double entries
When you generate a Ticket by the API from another application the ticket it's generate 2, 3 even 4 times of the same event. Enable the posibility of the detect double, triple or more duplicated entries.

Public information
Make public the incident or requirement selected and choose the posibility to make public or not the elements of the incident or requirement

Sign up in the GLPI with Linkedin
Enable Sign up in the GLPI with Linkedin, it's more fast and easy

GLPI + Mandrillapp in SMTP
Enable the option to send the emails by Mandrill app https://mandrillapp.com/

GLPI + Linkedin
Fill the information on every filed in the profile of the user is very boooored. So will be very cool if glpi have a option for fill this fields with Linkedin information.

Manual para GLPI
Si consigo 5 personas que me apoyen con tiempo y conocimiento, me pondre a realizar un manual lo más completo posible sobre la adecuación del entorno, instalación, configuración, parametrización, implementación y ajustes del GLPI completamente en Español y liberado bajo Licencia Creative Commons y hecho desde Cero.
Quien se apunta? A quien le interesa? Quien apoya esta iniciativa?
No que siempre dicen que el GLPI no tiene buenos manuales conocidos? es hora mis amigos de cambiar esta situación! escucho propuestas!

Can't "transfer and merge" a category from a root entity to a child entity
It would be great if we could "transfer and merge" a category from a root entity to a child entity. At the moment, we can only do it from a child entity to a root entity. Thx

rewrite engine -mail receiver works extremely well
rewrite engine -mail receiver works extremely well

contract : associate actors ( technicians, groups, observers) for notifications, searches,....
As for assets, i think it could be usefull to associate actors ( technicians in charge of contract, group in charge) and add these actors to notifications recipients list.
actually, contract notifications can be send to profile or group, whatever the contract.
Customer support service by UserEcho