First of all, rankings for Super Mario World PAL have been added, so Europeans and Australians don't have to play on emulator to compete. Sorry for not adding this ranking earlier.
Second, Super Mario Advance 2, the Game Boy Advance version of Super Mario World, is no longer allowed for SMW times. The reason is that the GBA version has some notable differences from the SNES versions, and we don't know of the full extent that the differences affect competition. Once we have more collective experience with Super Mario World, we may or may not choose to re-allow the GBA version or create separate rankings for it. But for now, disallowing the GBA version seems to be the safest plan. The same reasoning goes for the GBA version of Super Mario Bros. 3 and the GBC version of Super Mario Bros. (although these versions were already disallowed for a while).
What if you already submitted SMW stats that you got with the GBA version? If possible, please replace your GBA-played submissions with your best SNES times. Though, the most important thing is that everyone uses SNES from here on. Also, if we think you submitted GBA times and gained an advantage from it, we'll let you know.
So, summary of allowed versions for SMW: in the NTSC rankings, play on the US/Japan SNES versions only. In the PAL rankings, play on the Europe/Australia SNES versions only. Wii Virtual Console releases of these versions are allowed too.
To learn about the other rules for SMW (or rules for other games), read the rules here
By the way, You vs. Boo time charts for Super Mario Bros. Deluxe were added several days ago. And in case you didn't notice, Yoshi's Story and Mario vs. Donkey Kong were added a little while ago. There are plenty of other games that can go up in the future, as well. Keep in mind that we're only focusing on Mario platformers, though (not Kart, Party, Golf, Tennis, etc.).