Wow. I've been hanging out here on-and-off for almost 5 years. I don't contribute to the forums as much as others and I haven't made a monetary donation yet, but I have NEVER felt "coerced" into doing so...it has been quite the opposite. The message conveyed from EVERYONE is that there is absolutely NO pressure to donate anything more than quality posts. I don't see anything wrong with giving "subscribers" a little extra bonus in the way of Boolean search, etc.
Bandera (with "outhouse" mod)
Good-One Model 30-24