no it isn't. First of all they didn't ask your permission, secondly they used a software called a "scraper" that takes all content verbatim, even the authors name. You need to report them using a DMCA complaint if they don't take it down.
I really, REALLY wish hubpages would be more proactive about theft. They leave all of that solely up to the writers and it really irks me because it is so widespread. If they had a person that worked on that issue also it would be a much happier place to write. I get tired of constantly running people down.
I understand it's our writing etc. but they also are profiting on it and should be more helpful when it comes to fighting theft in my opinion.