First off, at this stage I should be focusing all my efforts on getting the word out and advertising. But just now I came across a problem with my website that would definitely be a future hinderance if this site receives significant traffic. But the problem is that I don't know anything about this particular kind of issue, so I'm Googling the hell out of it to find an answer. OK, if you want some technical details, read below:

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Basically the issue is that PHP is a single-thread app. So let's say 10 people on this site submit something that may take some time to finish. PHP has to start and finish the 1st request, then start and finish the 2nd request, then start and finish the 3rd request, etc. It's a single file line, so those other 9 people that clicked just before the 1st person have to potentially wait a while for their submissions to execute and finish.

Right now I'm reading up on various methods to work around this issue, and hopefully all 10 of those requests can be processed at the same time.