1) Do you plan to convert to the new edition of D&D?
Yes. With the caveat of: only if they deliver on what they've been promising. I like the idea of faster combat and less reliance on clerics needing to cast heals. I also prefer less rule friction at the table.
2) If Paizo converts its RPG products to 4.0, how will that affect your purchasing patterns for our products?
It won't. As long as the products are of good quality I won't mind converting if required.
3) If Paizo does not convert its RPG products to 4.0, how will that affect your purchasing patterns for our products?
See 2.
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Gut checks aside, I hope that you don't necessarily base your decision solely on message board feedback. I would hope that you would base your decision on the quality of 4e and whether or not you believe it will have legs in your market.
I play in two groups right now. One group is hopeful about 4e. The second group is nearly to a person opposed to it (baring me, of course).
The second group perceives it as a money grab by WotC. Which I find amusing. Mostly because I'm convinced they've spent more money on World of Warcraft than they have on their supposedly favorite past time.
I am not tied to rules; I'm tied to ideas. If 4e allows me to get my roll on and leave more time for fun ideas then that's its selling point to me.