+ What is WordPress?
Word press is a best Open Source CMS which allows it to be used free of cost. You can use it on any kind of personal or commercial website without have to pay a single penny for it. It is built on PHP/MySQL (which is again Open Source) and licensed under GPL.
+ How safe is website on WordPress?
The word press is safe to operate but still it is suggested to keep updating with the latest version of WordPress to avoid hacking.
+ Are there any limitations to a WordPress web site?
You can use WordPress for e-commerce sites, membership sites, photo galleries and any other type of site you can think of. The web site is created using the same html code as any other site so there are no limitations there either.