Thanks, but 95%?? That is totally unacceptable even for an amateur hobby site. My off-hand estimate is about 97% at the least. But then again, I don't know, and THAT is the question.
For individual hosting clients like you and me, third party monitoring services are relatively costly (cf. DreamHost's own hosting fees); and those free services (with 60 mins intervals) are just not good enough to tell the WHOLE truth.
To have lived is not enough for them, they have to talk about it. -- Samuel Beckett