GREEN BAY -- Green Bay Packers general manager Ted Thompson just finished up his annual pre-draft news conference, and while there wasn't any major breaking news to report, there were some interesting tidbits.

> On the idea of trading down 13 times: "First and foremost, I thought when we first came here that we needed to build up the core of our team a little bit -- that we were a little short in that regard. So, in order to do that, we started trading down. Trading down, trading up -- it's all a question of supply and demand. If it's your pick (and) there are multiple players that you would like to have at that pick and you don't have any real hard preference ... then sometimes, especially if you're trying to build up your core, then it makes a lot of sense to move back and pick up an extra pick later on."

> On whether he could get to the point where it no longer makes sense to trade back and accumulate picks, and whether the Packers are at that point: "At some point, if everything worked perfectly and all your picks worked perfectly and they were all really good players and that sort of thing, then I think after awhile you'd have diminishing returns, sure. ... I don't know that we're at that (point). ... I like our team. I've said that before, I continue to say it. I think we have a sound foundation and some core players here. I don't think you can ever get in a position where you stop trying to get better, and I think creating competition for the summer activity and for training camp makes for a better team in the fall."

> In an interesting glimpse inside the draft room, Thompson went through how the Packers' draft board works. It has all the positions listed along the wall at the top, forming "vertical" categories of quarterback, running back, etc. starting with the offense and then shifting to defense.

  Then, the "horizontal" categories are broken up by round, so the personnel staff can compare apples-to-apples, so to speak, by position, and apples-to-oranges, of whether to, for example, take an offensive lineman or a defensive end both have first-round grades.

> Asked about a Yahoo! Sports story about teams inventing phony Facebook pages to lurk online and check into prospects' backgrounds, Thompson said he's never been on Facebook.

> Thompson said there are no positions on the roster that are "set." So, even though the Packers have a deep wide receiver corps, he wouldn't rule out drafting one just because of that depth.

> Allowed 30 pre-draft visits to their facility by NFL rules, Thompson estimated the Packers brought in "about 20" prospects.

> Thompson would talk about any players specifically -- he seldom does -- but he did say that in the past the Packers have taken players completely off their board for character reasons. "There have been in the past, and there probably will be in the future, guys we'll take off our board," he said. "It's my call, 'Is this a good guy or a bad guy?' ... "If we think he's a bad guy, then we're not going to mess with him."