How nice it is to have a third party tool on your cv

After developing a project in Zend framework, I mentioned it on my CV and started applying for a job in new organization. oops in short span of 2 days i received interview calls from two organization straight away asking about zend framework. I realized how nice it is to have third party tool on a resume. However the problem is that different organizations are working on different frameworks. some on symfony, while other on cake and zend etc.
In first interview I was ask about CakePhp, but I was blank at that time, and my reply was "I haven't had the taste of cakePhp". The reason why i choose Zend instead of cake is simple.
"Initial configuration of cake is a bit difficult".
And this was my answer in interview too.
Now I have received a second call from the same organization and sure that they would hire me. however salary can change things suddenly.
hmm I think after wasting 8 to 9 months I need to join a good software house. This is very important for my future. Although i have worked on a project in zend, know how to work in ajax and good understanding of OOPs and Databases, but i haven't developed ecommerce and social networking sites. and i think it is important to work on this type of sites to secure my future in information technology field.