Is it still bad etiquette to force a link to open in a new tab?

[qTraceyCombsu]

Now tabbed browsing is the norm, is it still considered bad etiquette to force links to open in a new 'Window' (\[code\]target="_blank\[/code\])? For a page that I am designing, I think it is by far the best option for a set of links, but I don't want to upset any purists who visit my site.What is the polite thing to do in 2012?