18. An informational network neighborhood comprising: a memory configured to store a representation of: a structured web community neighborhood within a network of linked nodes, the structured web community neighborhood comprising a plurality of communities of network nodes linked by edges around a seed node, and wherein the seed node and the set of network nodes comprise one or more reference links, each of the plurality of communities comprising a set of network nodes that are more linked amongst themselves than to network nodes that are not included in the community based on an analysis of the one or more reference links of the seed node and the set of network nodes, and a set of annotations identifying concepts of the plurality of communities of the structured web community neighborhood; and a processor configured to perform probabilistic percolation crawling to construct the structured web community neighborhood, wherein performing probabilistic percolation crawling comprises following the one or more reference links in and out of the one or more web pages to one or more network nodes probabilistically, wherein performing percolation crawling further comprises randomly selecting reference links in and out of the web page and in and out of the one or more neighboring nodes, wherein selected reference out-links are added to a linked database when the link satisfies a first probability and selected reference in-links are added to the linked database when the link satisfies a second probability, the processor further configured to generate the structural web community based on the percolation crawling by iteratively partitioning the linked database into overlapping communities, the processor further configured to assign a concept to each community identified in the probabilistic percolation crawling based at least in part on a semantic analysis of the community.
18. An informational network neighborhood comprising: a memory configured to store a representation of: a structured web community neighborhood within a network of linked nodes, the structured web community neighborhood comprising a plurality of communities of network nodes linked by edges around a seed node, and wherein the seed node and the set of network nodes comprise one or more reference links, each of the plurality of communities comprising a set of network nodes that are more linked amongst themselves than to network nodes that are not included in the community based on an analysis of the one or more reference links of the seed node and the set of network nodes, and a set of annotations identifying concepts of the plurality of communities of the structured web community neighborhood; and a processor configured to perform probabilistic percolation crawling to construct the structured web community neighborhood, wherein performing probabilistic percolation crawling comprises following the one or more reference links in and out of the one or more web pages to one or more network nodes probabilistically, wherein performing percolation crawling further comprises randomly selecting reference links in and out of the web page and in and out of the one or more neighboring nodes, wherein selected reference out-links are added to a linked database when the link satisfies a first probability and selected reference in-links are added to the linked database when the link satisfies a second probability, the processor further configured to generate the structural web community based on the percolation crawling by iteratively partitioning the linked database into overlapping communities, the processor further configured to assign a concept to each community identified in the probabilistic percolation crawling based at least in part on a semantic analysis of the community. 25. The informational network neighborhood of claim 18 wherein certain of the plurality of concepts are derived from semantic processing of terms in the network nodes.