A good function. But it would be easier to download the file directly instead of opening a single post thread when clicking at attachements on mq4 file.
Personally i dont like and recommend due to some genuine reasons
As mostly posts that includes codes,users can possibly have some descriptions and demonstrating pictures (especially posted by experts) to get some idea about,
Do you think,upload few packs that includes all and every code and shut every thread
Use it only if it can benefit you. Leave it if you don't know how to use it optimally.