How big is the map going to be? Will Skyrim in the MMO be the same as as in Skyrim the main series game? Or bigger? Smaller? Also will all of the continent be available form the start?

Much bigger, but not all the content will be released at launch. The entire province of cyrodiil is just the pvp area!

Is Black Marsh going to be there at the start?

http://www.gamesas.com/topic/1403267-teso-development-faq/ read the faq.

Well, maybe.
I really shouldn't say yes.

In that case I will have to contend with wandering the ash wastes of Morrowind. Ahh good old times. I only ask because with some of my conditions I might not have the longest of life spans (or I might just be fine, it's hard to say) and I want to see Black Marsh. And we all known how long main series games take to get made. So yea, was kind of hoping it and High Rock would be in, but the document says not on first release. Anyways thanks.

I can't believe a province like Skyrim could be bigger in square miles than the one in TES V: Skyrim.

Yea, my mind is boggling here. So that means this game is just immense. I can't wait to dive in. Ah... the http://www.youtube.com/watch?v=ZWuNf4gxwuM. I long to see you again. It's been too long. To think how long it will be until the Nerevarine is known.