Little IE7 Nugget, set Taget="_Blank" to open in a new tab not a new window
I'm very happy right now. Target="_Blank" is one of my biggest enemies. The attribute has it's place, but it's far far far far far far far far far far far far (get my point?) over used. For the longest time, I've been wanting to open these items in a new tab in IE7, not a new window.
I've asked several people in casual conversation but never received a solution.
Low and behold, while snooping around Tools | Options | Tab Settings - I found this. I'm sure it's been there the whole time, but because the feature didn't say "Map _Blank to New Tab", my brain must not have processed the meaning of the label.

I've turned it on, and my pages are now opening as I'd like them to. Thanks IE7 :)