List Aggregation-Rollup across site collections (Even across Farms) using Dataview and Web Services in SharePoint

With SharePoint web services and dataview web part, You can aggregate the lists/document libraries/etc between sub-sites/site collections/web applications/even across forms. So, here I’m going to walk through how to achieve this using a simple example. Let’s say I’ve two sites namely:  Site1  and Site2 and I have an Announcement List 1 in Site 1…

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