I have the Asus Google Nexus 7, it's a 7 inch tablet made by Google and Asus, it's very good and the price is really great, 250 euro for a 32gb version. It's got a great screen and feels really nice to use, and is really quick and responsive. You can get about 9 to 10 hours of watching HD video on a full charge, if you only use it lightly you will have no problem getting 4 days out of a charge, I use mine pretty heavily throughout the day and I still only have to charge it maybe every 2 days. It also has a front facing camera for apps that can video chat, it's not the highest quality camera by any means but it's only really for video chatting not taking pictures. It also comes with the newest version of Android which is great.
You can install Skype and other IM apps through the android app store, I have a few IM apps on my mine already and there are plenty of blogging apps you can get on it too like Blogger, Wordpress etc, you do have to download them onto it because they won't come on it but they are free on the android app store.