Yeah, I already figured Google knows who I am and what all my aliases are anyhow.
You are absolutely right, but abandoning pseudonymity based on this reasoning reflects a common misunderstanding about how data mining works. Please don't give up so easily. You see, organizations that scrape and aggregate data from the web can only probabilistically connect all your aliases. That is, they only know with 97.3% certainty that YouTubeTrollKing7 is the same person as osu-neko, and they only know with 98.5% certainty that osu-neko is Brian Nekomori who attends Oregon State University (I made that up, by the way). That may not be the kind of privacy you would prefer, but it buys a lot of freedom, especially if everyone does it. You see, the Internet is kind of big, and man-hunts involve skewed data. (That is, most people are not the person they are looking for.) Since false-positives create big headaches for data miners, they tend to set their thresholds very high. For example, if they set their thresholds at 99.5%, those pseudonyms will not be recognized as connected to you.
So, what does this buy you? Well, it's not enough that you can go around committing crimes and expect the FBI to never find you. But, on the other hand, they're going to have a hard time achieving a conviction if they cannot find any other supporting evidence. Furthermore, people just don't seem to understand the power of exponential decay that occurs with probabilities. The more pseudonyms you use, the more the probabilistic connections among them decay into the low 90's, making it extremely cumbersome to link them all together. Imagine having to filter through the 0.01% of Internet posts that happen to falsely connect with your pseudonymns with high probability! No one wants to do that, so guess what, you have some privacy.
So, don't give up on pseudonymity. Yes, data mining is real, but no, it is not omniscient. Pseudonymity doesn't defeat it, but it makes them pay a dear price for finding you. Make them pay to know who you are. If everyone does it, the whole industry stops being so lucrative. The very reason data mining pays off so well right now is because of people who take the attitude that "it doesn't matter because they know anyway". So, stop it!