I don`t thinnk it`s desperate. I`m not sure if it`s neccessary.
I have a colleague who owns a .net business. HE made an error when he was a newbie building the site and did not buy the .com version.
A competitor came along and bought the .com and built a simimlar business.
Most people type .com instinctively, so he was getting a (albeit small) percentage of the casual traffic. My colleague grew upset, so it must have worked to a degree.
But the contrast? Buying a .net?
I`m not sure you can get casual traffic with it without advertising the site first.
Since .net is almost as popular as .com you should be able to build a decent second site or use it as a re-direct...
But I think the `desperate` comment was along these lines:
if you buy the competitor sites just to get cacsual traffic, it `looks` like you think it`s the only way you can get business. You and I know this is not ture, but often perception creates reality.
By contrast, if you have done it b/c you can do something cool with the site and gain a second stream of income...then what is the harm? I`m sure I`d buy CocaCola.net if it was available...and CHEAP! LOL!