The theme on the blog linked to your username is PressRow. The only way we can alter any wordpress.com theme is through purchasing a CSS upgrade and editing the CSS stylesheet, however, as we don't know exactly what you mean we cannot say that CSS editing will achieve what you want. Will you please expand on what you mean by
"the view area is kind of tall and skinny--- any way to make it take up more space?"
In the event that you do wish to explore the CSS editing option, if you have CSS editing experience, you can get the paid custom CSS upgrade and renew it annually. It will allow you to stylize the appearance of themes you find here > Appearance > Themes, but it does not allow you to change the functionality, by editing the underlying template. Also note that CSS is theme specific, so you cannot use the CSS stylesheets from other themes with the themes here at wordpress.COM.
Since there is no official Staff support for the CSS upgrade, and precious little Volunteer support, I recommend that you don’t buy the upgrade unless you have at least moderate understanding of HTML and CSS because you must be prepared to do the work on your own. If you are considering purchasing the upgrade, you can go to Appearance > Edit CSS. There wordpress has provided a preview function where you can try before you buy.