Saying that someone is an anti-google marketing campaign, based on them being paid by google's opposition, is an accusation that may or may not be true, but is hardly a personal insult and is not a fallacial argument as it pertains directly to the matter at hand. The actual truth of a statement is not the requirement for it being considered a logical fallacy.

As to calling his blog garbage, his blog is the method by which he is communicating his views and so it is a judgement of quality of his writing, not of him directly.

[edit] also a personal insult, such as calling someone a complete and utter muppet, can be a perfectly reasonable point to make in argument as long as it is particularly relevant. Which judging from your commentary so far, is something you may wish to keep in mind.