A system is described for targeting data to a site referenced on a page based on a condition. The system may include a processor, a memory, and an interface. The memory may be operatively connected to the processor and the interface and may store a data, a site, a condition, and a page containing content....http://www.google.co.uk/patents/US8108390?utm_source=gb-gplus-sharePatent US8108390 - System for targeting data to sites referenced on a page