[john_rsd]

I am not against this, there are some add-ons that I would pay for.

However

To allow listings from those offering commercial services, I would suggest the following

The directory should be under vbulletin.com, not .org

There should be also a vetting process by vB BEFORE they can place the ad.
The advertisers should have to meet minimum criterea for development, AND support before being acceptable.

The advertisers should have to meet minimum criterea for proven history of mods and support, perhaps even require a minimum number of customer testimonials before being placed.

The advertisers should have to meet minimum criterea for proven compatibility for integration by vb.
vb should charge for this "pre-compliance" service and in return advertisers, third party developers would be advised in advance of code structure changes to be more compliant. (in the long run this will reduce support requirements)
There should be an additional recognition for third party developers who work with vb instead of independantly which can be an indication to prospective customers on the third party providers commitment to providing a better quality of service & support.
They should receive an advertising discount applied for them.

The service & support supplied by vb and vb.org authors is fantastic, but it won't be the first time I have seen great ideas commercialised under a parent umbrella and it back fires as the third party support cannot fill the shoes of the parents when it comes to customer expectations.

Alternatively just have a qualified listing or directory, no fees for ads, users who download and get a benefit from the mods can pay a donation directly to the author if they want support.

Just a few ideas, but i do agree 100% that this should be thought out, planned and executed with no haste at all.