i have never seen a slime on this server and i'm sure they're rare.
In the new update there is pistons and Sticky pistons made by making a normal piston and putting a slime ball on top of that regular piston.

Will admins Give them to players or will we go without?

I find the green text annoying :p

But that's just me, who gives a damn

Its for the color of slime =p

I have found a couple of slimeballs. This green creatures spawned in my mine right after the update but i have not seen any ever since

How to search the Internet: Google.com -> minecraft wiki slimes

Copy pasta
A slime is a green, sentient translucent gelatinous cube that appears in various sizes and splits into smaller slimes under certain conditions and will follow the player around if they come close enough. With the exception of the smallest specimens, slimes will hurt the player upon contact. Slimes only appear in the bottom 16 layers of the map regardless of light levels or time of day, often in large caverns or open mines.