Social Networking usefullness

I would expect that social networking could help with giving me ideas for free lance things to do after retirement for interest and profit.

I would like social networking to elicit ideas for my current job especially as regards technology - like things we are learning in this course.

Perhaps social networking could help me when the time comes to sell my current home and find another smaller one on Cape Cod.

I do photography and oil painting for pleasure but would like to earn some money at it, so perhaps social networking could help with ideas for that.

Finally, perhaps social networking could help with tips on travel to places like France.