blog vs group email

So I've been planning this trip to South America for quite some time (and talking about it constantly much to the disgust of my family, friends and work colleagues).


I'm going to need some way to led everyone know about all the fabulous things that I do and see along the way.  I could set up an group email list but I'm thinking this has a number of disadvantages:

• I could miss some people  off the list and offend someone, especially after the whole stepbrother fiasco of 2000 (we emailed Rodger, but not Geoff; mum emailed to say poor Geoff was feeling left out but accidently cc'd Geoff onto the email; Geoff emailed to say that he wasn't feeling left out at all; Geoff was added to all subsequent emails and probably ended up being one of the people in the next bullet point)
• I could include too many people and end up annoying my work colleagues who really don't want to know about that nasty episode of diarrhea I got after drinking freshly squeezed orange juice (stupidly with ice)
• people have a nasty habit of changing their email address (and do I send it to their work email and risk their boss reading about the aforementioned diarrhea or do I send it to their hotmail/gmail/yahoo account which they check once in a blue moon?)

So a blog it is.  Now I just need to figure out how to invite people, load photos and see what all those other buttons on the left do.