I'm not sure I'm following what you are saying, but I will try...
Yes, a place where you can share ideas and thoughts about an X subject, but here is how it is different from Twitter:
At MyMindshare you can attach an incentive (the bid) to your ideas and thoughts to induce people to read them (the bid amount determines how high in the message list your ideas/thoughts appear). You can offer a 0.0 bid, which means you are asking readers to share their mindshare with you, free of charge.
Another big difference from Twitter is that at MyMindshare you can deliver your message to specific groups of people -- the people who are most likely to value your message.
"give the rights to use it" -- I don't understand what you mean. There are no "rights" involved, unless I misunderstand what you are saying.