I don't think it's a big deal as far as the visitors to the site go, but it could have a negative effect on the Expression Engine developers and the hosting company for this site, since a hacked site can imply that a) the CMS software has security holes and/or b) the servers are not properly secured.
Judging by yesterday's post, I don't think the Expression Engine people were too impressed.
The problem is, a year from now when someone searches for Expression Engine security issues, as part of their due diligence for choosing a CMS, the fact that Apple Matters runs it and was "hacked" will show up. They may or may not dig into it enough to see it was a hoax.
It could have an impact on Expression Engine, beyond the here and now.
We all make mistakes but frankly your post yesterday seemed very insincere. Why didn't you post something like this then instead of something that seemed sarcastic and merely a CYA post for the benefit of Expression Engine?
This site has lost some credibility in my eyes.
Sincere Apologies
Sincere Apologies