Have anyone seen or feel any effect of this on their network?
We had some cell tower issues here in NJ.
chris
Yes.
Users going to twitter, IRC, Facebook, Google+, etc., are WAY WAY WAY up. Ditto news sources.
Oh, and of course, XKCD. 
5.9 Epicenter in Virginia:
http://earthquake.usgs.gov/earthquakes/recenteqsus/Quakes/usc0005ild.php#summary
Seeing slow internet access out of ASHBURN, VA data centers. Verizon and Global Crossing. Carriers circuits probably overwhelmed with voice/data.
I do not have any info on outages or damages related to earthquake.
Just an observation:
Sprint 3G data and Texts are sporadically working here in Reston, VA. 4G
wimax is fine.
T-Mobile is completely out in Bethesda, MD. No voice or data signal whatsoever.
Tmobile is back up in Ashburn, VA