Is safe to give my IMEI to LeadBolt to enjoy apps without advertisement? On the LeadBolt opt page you can specify your IMEI number in order to opt out from their service:


  The IMEI/MEID is a number, usually unique, to identify GSM, WCDMA, and
  iDEN mobile phones, as well as some satellite phones. It allows us to
  identify your device and ensure you are opted out from our services.
  Importantly, the IMEI/MEID is only used for identifying the device and
  has no permanent or semi-permanent relation to you as the subscriber
  protecting your privacy.


Is this safe? Would let me enjoy Android apps without annoying and invasive ads?
I can't tell if LeadBolt does as promissed, but I see no harm in giving somebody your IMEI. At least if you don't use services that do authentication with your IMEI (never heard of one).

But you should wait a little, maybe there is a objection regarding my statement.