Craftland.org

It is really annoying when you think of stuff to build in little blocks then suddenly you can't cuz they don't work in the little blocks mod, so maybe make the mod more compatible or maybe add a list of blocks that works so you don't have to get your hopes and dreams crushed all the time, Thanks!

Basically every 1x1x1 cube block that isnt a container will work, and most vanilla/older craftland non regular sized blocks should also work. The main blocks that dont work are either items that place blocks(e.g. cauldrons, doors) or blocks that are containers(e.g. furnaces, dispencers) or most things with a tile entity.
The blocks do take into account if something has to be placed below them, e.g. plants require dirt/grass below them.

Does red stone work?
I would love to compress my red stone

No, redstone used to work, but it caused massive problems for the server. It still has basic functunality, e.g. put a redstone torch next to redstone, and the redstone lights up, but still like levers, buttons, repeaters, none of that actually works, but is placeable inside the blocks.