The most common "gift" in a nulled script is a hidden backdoor. Nullers almost always embed a PHP backdoor (e.g., c99 shell, b374k, or a disguised eval(gzinflate(...)) in a random image file).
Consequences:
Once a backdoor is installed, the attacker doesn't always act immediately. They wait. Then they inject spam links (e.g., Viagra or gambling keywords) into your page titles and meta descriptions. Your legitimate buy-sell ads site will be de-indexed by Google overnight. buy sell ads script nulled
Worse, they might create a phishing page on your domain (e.g., yoursite.com/paypal-login/). You get sued by PayPal and blacklisted by every security vendor. The most common "gift" in a nulled script
You do not need to break the bank or the law to start your ad marketplace. buy sell ads script nulled