you are just kidding any social network accepts only one account per ip there aim is to provide real humans not spammers so ultimately u required per ip is only 1 acount
There arе оther ways to identify the PC.
Keep it to 3-4 to be safeIf you really know what your doing on twitter you wont need more than that.
I have over 23k followers between 4 accounts right now, which actually do some converting on tweets
I prefer quality over quantity, but that is just me