Should I stop posting from work?

[Ghoulish Delight]

I love working for a tech company.

Although my internet use has dropped over the last couple of weeks because they are making us fill out time reporting sheets. They claim (and I have no reason to not believe them) that they aren't for checking up on how we're using our time, but rather to build a case that delays in our test cycle aren't our department's fault, but even so, there's only so much truth stretching I can do to fill this thing out, so I'm having to spend a little more time monitoring tests rather than being online. Which is lame, because I CAN do both and no one ever really watches what I'm doing or anything, but I just don't want to risk someone saying, "Your time sheet says you worked 4 hours on this project last week, but I saw you on the internet for 2 hours." Bleh.