Marcellus Shale links:

What is:  http://www.marcellusshales.com/

Drilling projects and other information:  http://www.marcellus-shale.us/

Combination of a web-based DataTool for tracking & visualizing data related to gas extraction in the Marcellus Shale region:  http://www.fractracker.org/

Marcellus Shale Coalition:  http://marcelluscoalition.org/

Marcellus Shale Protest:  http://www.marcellusprotest.org/

Action alliance:  http://shaleshock.org/

Keeping the public informed:  http://themarcellusshale.com/

Neighborhood drilling:  http://www.lpactiongroup.com/

Additional Information on Natural Gas Drilling:

http://damascuscitizens.org/   - Damascus Citizens 

http://lpactiongroup.blogspot.com/ - LP Action Group Blog

http://shaleblog.com/ - Shale Blog 

http://threeriverswaterkeeper.org/maps.html - Three Rivers Waterkeepers 

http://www.chk.com/Pages/default.aspx - Chesapeake Energy

http://www.donnan.com/Marcellus-Gas_Hickory.htm - Bob's Blog 

http://www.marcellus-shale.us/ - Marcellus Shale US

http://www.pennfuture.org/default.aspx - Penn Future

http://www.propublica.org/ - Propublica