Jane_Doe - 2:56 pm on Jul 1, 2005 (gmt 0)

Links change or drop, LSI can easily confuse your site, penalties/sandbox bring down established unique sites all the time, algo changes can be ruinous etc...

Again it depends on your perspective and experience with your own sites. If you have had a lot of sites disappear for reasons unknown to you in the past and have not been able to get them back in the serps, then you would be wise not to spend much money on a site in case that happens again.