This is a manually updated list of people twittering about the eruption from the Eyjafjallajökull volcano on Iceland.

Note: please comment if you miss anybody/anything here.

Twitter accounts updated within the last hour:
hjortur Tweets about it from Iceland
claudiorosmino A journalist tweeting about it
darenbbc Another journalist tweeting about it
gislio Tweets about it from Iceland
KLM KLM
ElaineKirk Tweets about it, also have some nice pictures
Icelandair Icelandair, Airplane company based on Iceland
FMCNL Tweets about plane news
AirlineIndustry Tweets about the airplane industry
travelworld101 – Travel news
guardiannews British newspaper
TerrenceYoung “In the zone”
calaisrescue “Rescues” people on the continent
NewsZombie Newsfeed, mentions it often
jmsardo Tweets about it
AshAlerts Tweets about it
hjortur Tweets about it
stupidcatstweet (re)tweets about it
klmfan Tweets about KLM
chriswotton Tweets about it

Twitter accounts updated within the last three hours:
flyersview Airplane news
foreignoffice Tweets about it
NealKarlinsky Journalist currently on Iceland
CNNbrk CNN
eurocontrol EU air safety organization
ExamineDisaster General disaster tweeting
salvor Tweets about it from Iceland
from_iceland Tweets about it from Iceland
SHSig Tweets about it from Iceland
UnitedAirlines United Airlines (US)

Twitter accounts updated later
lizmale Tweets about it
michaeltnoel A stuck traveller
BritishAirways British Airways

Hashtags
#iceland
#ashtag
#ashcloud
#stranded
#putmeup
#getmehom

Other resources:
Webcams showing the volcano (Please note that the weather around the volcano is very variating.
http://eldgos.mila.i…-thorolfsfelli/ – Can be slow, i reccomend the mirrors.
http://www.vgtv.no/?id=29824&category=1 – Norwegian mirror #1.
http://www.vgtv.no/?id=29823&category=1 – Norwegian mirror #2.
Webcam pointed at Hekla (another volcano)