It does seem a lot like Omagh, the early bombs, as horrible as they are, have been relatively small scale. It just doesn't feel like it's over yet.
As for G8, the talks are still going on today and if it is to do with G8 then the likelihood is that they wanted to disrupt it, what better way, aside from bombing Gleneagles, than to bomb the capital city?
Aparrently Al-Qaeda have admitted responsibility saying that Italy and Denmark are next, they're saying it's a warning telling them to take their soldiers out of Iraq.