Call me naive, but I'd rather give my users features, than worry about abuse.
hope you have the webspace and bandwidth to back that statement up :x...
Keep in mind, unless you have .htaccess definitions setup to block offsite linkers you can end up with people registering just to dump files and link to third party websites... And best of all, in a PT no staff can see it, until you notice a bw skyrocket
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