Ask yourself these questions before posting links on hubs.
Will this link increase the value of my hub?
Are readers likely to follow this link or will they think it's just an ad or promotion by the author?
After readers follow the link will they think to themselves "Wow, this is really useful and relevant to what I was just reading about" or will they hit backspace and read a different article?
You can link to your own website, many authors do. You just can't do it in a way that's promotional or looks like spam. It must be of real value to your reader. If you didn't own that website would you still link the hub to it?