I'm being told that I'm infriging on a patent to search content within my own site.

I can understand your difficulty reading the patent claims. They are convoluted, even for patent claims. A patent gives you the right to keep anyone else from making/using/selling the claimed matter. There is no requirement that an infringer 'copied' the method/apparatus from the patent owner and independently conceived products can still infringe patents. I note that this patent has a filing date in 2011. It is possible, if you started your site earlier, that you may have rights that pre-date the patent holders rights and even that your prior activity may invalidate the patent. Otherwise, you need to show you do not infringe or that the patent is invalid. To show you do not infringe, you need to find one element within each of the independent patent claims that is not contained within your site. To invalidate the patent, you need to show that other people have done what he is claiming prior to 2011.  Alternatively, you could show that prior to 2011, people were doing exactly what your site is doing, which would necessitate a finding of non-infringement or invalidity. Patent infringement suits are a mess. It could take a patent attorney a week to analyze all of the information necessary to advise you what your best course of action is. Good luck, Todd