As with all volcanic activity there are a number of potential outcomes (for information on these see the IMO website update for the 26th August at 15:45), as such, any blogs or posts which pertain to one exact event happening are unlikely to be trusted! As always though the Eruptions blog by Erik Klemetti is a good and informative read.
There are also quite a few nutters on Youtube these days, so I would be very careful what you watch there.
Below is the twitter feed for the hash-tag Bardarbunga, which, among random posts, should show the most up to date news. Tweeters to look out for are @HTuffen, @Sim0nRedfern and @subglacial. This is of course not an exhaustive list! Don't forget to keep an eye on the webcams too! Links here and here, (the former link does not currently seem to be operational).