Two Free Blockbuster Express Rental Codes

So apparently there are two more free Blockbuster Express rental codes out that look way too much like previous codes: GT16A (expires 7/31) and GL15A (no idea what this expiration is). Why can't Blockbuster take their cues from Pampers? Those I can keep up with! My vetting process for them goes as such.

1. Is it a new month? If yes, proceed.
2. Does the code have said month in it? If yes, proceed.

Thankfully it doesn't get much easier than that. I can't walk and chew gum at the same time, which I learned the hard way after entering a speed walking contest sponsored by Bubble Yum.