We used the feedback mechanisms on your site as well as posted on your site. I'd say it isn't good that you didn't notice.
Please also remove all previously posted content.
You should note that what your site is doing (even if pulling from RSS feeds) goes way beyond fair use and well into the area of copyright violations. You might want to rethink your business model and consider syndication licensing or something else that doesn't violate copyright or other laws.
Edit: I'll add, someone on your site was aware of the issue. They removed the post I put on your site.
I am Moderator on www.naijafinder.com.. I just Noticed you discussing about Naijafinder here. And i just wish to attend to the Webdeloper.com webmaster request. It maybe be you sent us an email but we did not noticed your message.
To show concern regarding your content, your rss feed has been removed from Naijafinder and your content will no longer be posted on Naijafinder.com.
Regards and wish you best of luck.