Ok so most people will know about this, but for the people that don't...
How to use smile basic source on the 3DS/2DS browser (not the best but it works). Follow the steps below to use this.
Step 1: go to your 3DS/2DS internet browser and open it.
Step 2: go to the URL tab in the start menu
Step 3: type the following URL (http://smilebasicsource.com)
Step 4: click on the high compatibility mode at the bottom of the page.
Step 5: sign in using the sign in boxes at the top of the page.
Step 6: you should now be able to use smile basic source on your 3DS/2DS browser.
Step 7: If you wish you can bookmark the page and save it.
Enjoy
PS : please note that some stuff may not work properly such as polls on the 3ds browser but most stuff will still work.
