Pretentious name, I know, but I wanted my 51. thread to be really cool and need all the attention I can get in order to make this work! 
It's cool if it doesn't work too, as I'll be remembered (by myself, mostly) as a guy who at least tried
The idea is this: post your dearest tips here - lessons about everything and anything webmaster related you've learned - and post them one at a time.
If everyone was to do this every now and then, this thread could turn into a massive collection of good, valuable tips that we'd all benefit from.
So let's start, one tip at a time...

It's cool if it doesn't work too, as I'll be remembered (by myself, mostly) as a guy who at least tried

The idea is this: post your dearest tips here - lessons about everything and anything webmaster related you've learned - and post them one at a time.
If everyone was to do this every now and then, this thread could turn into a massive collection of good, valuable tips that we'd all benefit from.
So let's start, one tip at a time...