My experience in Roblox today: Lets see, I joined a server where you must create a raft to get through and obstacle course, fair enough. So as I'm building my raft, some starfish comes and deletes it ):< So I build another one...that ones finished, and this time I swear to god, some guy came and jumped on the seat and wouldnt get off. I kep telling him "Please go make your own raft" He just said "no" over and over.
Theres no way to controll other people from destroying your bricks unless you have a weapon.
And another thing! Better building my ass, the process of spawning bricks is completely loving abusrd. And you can only create your own bricks on your own place in single player mode! You have to go to insert, click bricks, then you have to place down your brick. The trouble, is that all the bricks are your basic everyday 2x4. You have to rely on resizing the brick each time! Its so much trouble, to get the brick you want its not even worth it! So your selection of bricks is just 2x4's, thats it, nothing else. Unless you resize them which is annoying. Spheres are pretty much the same deal, you have to more editing stuff to the brick. While in Blockland, its simple, categorized, and easy to navigate.