For how the site operates, describe the typical structure: category browsing, search options, download links, mirror sites if the main one is blocked. Maybe mention that users need specific apps or browsers to access it.

Alternatives: List legal streaming services, maybe include both free and paid. For regions with limited options, note that some services offer offline downloads. Recommend using these for supporting creators.

I need to make sure the content is factual and up-to-date. Also, avoid any endorsements or positive spins on 3gpking. The focus should be on informing users about the aspects, not promoting the site.

Legal implications: Copyright infringement is the main issue. Laws vary by country, but in many places, downloading pirated content is illegal. Also, the site operators can face criminal charges.

Check for any recent news on 3gpking to see if it's been shut down or any legal actions affecting it. If there's information on that, include it. Otherwise, note that such sites often have mirrors or change domains to avoid detection.

Potential pitfalls to avoid: making the post seem like a tutorial on using the site. The goal is to inform about the site's existence, its implications, and alternatives.

I should check if there are any legal actions taken against similar sites to support the legal part. Also, include some statistics if possible, like how many users these sites have, but might not have exact numbers. The risks section needs to emphasize that downloading from such sites can expose users to malware, phishing, etc.

In the 3GP format section, explain what 3GP is—its benefits for low-bandwidth, file size, mobile compatibility. Also, note that it's an older format, so while useful, it may not support modern codecs or resolutions.