>I have a question about the following design approach for web application which targets are tablet browsers like iPad, Nexus, etc. The approach I choose is the following:
>The main page of the application has a pull-down menu. When user clicks on an item of the menu a new tab is opened. For example, one of the items on the menu is View Order. And I envision that a user may want to see several orders at the same time. So when he/she clicks on this menu anchor, a new tab is opened where user enters order number and views the order. At the same time he/she can click on the same menu item again and open another tab to view another order. And so on. So practically, the main tab/page of the application will host the main menu and some static text (I have not come up with what text though).
>What do you think about this UI approach? Would this type of app be called MPA (Multiple Page Application) as opposed to SPA (Single Page Application)?

My problem (so far) with the MPA approach is that I don't see too many (or actually any) sites on the web (by reputable companies) that have this approach. That is, that would open a new tab on the menu items clicks. I need to find those sites to convince myself that this is the right direction. The only sites that work that way are the porn sites and the last thing I need is my customers referring to my application as a porn app <bg>.