Modifications and Hacks question
 

Forgive the noobie questions but...

1. What is the difference between a Mod, Hack and add-on?

2. Does either affect the vBulletin database tables?

3. Can this cause problems if you upgrade to VB 4.0 or even a version upgrade on VB 3.8.1? (I am using VB 3.8.1)

Thanks,

Jon

I'm a relative noob myself, but the way I understand things:

1. They are the same as far as I know
2. Yes, some mods add database tables or columns, but some don't.
3. Yes, having your site dependent on mods can cause update issues. Obviously going from version 3 to version 4 will cause more problems than a version 3 upgrade.

I'm sure someone will correct me if I'm wrong...

Or not correct you since you are right! :)

Can you easily uninstall these mods or do they leave behind stuff like extra table columns?

It depends. Most mods are written correctly with uninstall code, but that is not guaranteed. You should always read the code, read the install instructions and uninstall instructions (which should be exactly the opposite) and read the thread to make an informed decision about a mod.