I'm not saying it's not right for your situation. I just pointed out the other side because you are quick to point to competitor's products. I think it's only fair to put things in perspective and let everyone choose what works best for them.
The only time I use a company's support forum to point to another company's product is when they don't directly compete. That's just me. There are plenty of mailing list out there to get recommendations.
Also I disagree with your premise that PHP/mySQL is only for large sites like Amazon. Just because it's capable of doing large sites doesn't mean you shouldn't take advantage of it for small sites.
