Some questions

[EzMike]

Hello,

I'm a little bit newby in the crypto-currencies world. There are a lot of currencies then I have some questions about mining and I hope you can help me.  

Which currency is the most interesting to mine so as to do profits ? (I'm talking about cpu mining here - with my personnal computer)
Is it worth to use small miner (50$ USB miner) ?
Is it worth to make a own mining pool ?
What are the best you to make mining worth it ? (Any kind of tip that you can have about hardware, software, pool or everything else)

Obviously, I'm thinking you to answer these questions and have a nice day  

Edit: posted on the wrong section - to delete

[galaxy5user]

Is it worth to make a own mining pool ?

The same question is interesting to me.

[sjbi]

Is it worth to make a own mining pool ?

The same question is interesting to me.

Though making a mining pool is not a difficult job, maintaining one is a pain.
The first thing is to get miners on board and second to protect it from downtime, and different kinds of targeted attacks.

[galaxy5user]

Though making a mining pool is not a difficult job, maintaining one is a pain.
The first thing is to get miners on board and second to protect it from downtime, and different kinds of targeted attacks.

I didn't suppose a public pool, only for my own rigs. Is it worth to escape from probable hidden taxes hold by pubic pools? Actually there is no way to prove the public pools didn't trick me.