I understand this is not uncommon at many sites that don't want competition but I do sometimes wonder if the org is really committed to serving all of the vB community. If the org is not here to serve all, what/who is it here for then? (seriously)
It is cleary served to Jelsoft as the addons is the part where vBulletin beats IPB or any other low cost forum solution. But Jelsoft always tries to deny this. It also servers to admins and mods of these site as Marco is paid via Jelsoft and other admins are making names for themself which of course increases their hourly rate
I fail to see what either of these posts has to do with signature rules.
The vB world isn't entirely made up of hobbyists. A rather large part of it consists of business people such as myself. A simple link to my site in my sig being prohibited because I offer a paid service or item seems discriminatory...just my personal perspective. I don't wish to make a product comparison but I will say that IPB seems to be a lot less "uptight" about these kinds of things and I don't notice the world coming to an end there for them because of it. Heck, they have an official resource site that is maintained quite well and I would venture to guess is appreciated by the whole spectrum of their users. Thats the only point I'm trying to make...how all of the users at the org perceive themselves as being treated.