Well, I will get straight to the point
Do you want to download your Social networking account data?
If yes, I provided u the links which will take you directly to the download page
. Download Google Associated Data
Download Your Facebook Archive
*Note: Unlike Facebook and Google, You have to request Twitter for your data in settings page. Then, Twitter will send you a Download link to your email*
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If want an ALL IN ONE feature, then I recommend you to try Social Safe
Social Safe is offering online backup for all social networking sites. There is a Free Trial available for 60 days, after the trial period you need to pay for their services.
I hope you liked the post, I tried to make it very simple without nonsense. I will post LinkedIn data download link in future, if u want it so badly then you are welcomed to try Social Safe.