At the bottom of every post it states who the author is...clicking on the username, or the ''(see profile)'' next to it will take you to the person's profile. This will work for your own as well when you are viewing your own post. Another way is to look at the top of the left-hand column, where it says ''Welcome, laydeefressh.'' Clicking your username there will also take you to your profile.
However, I would like to note that Cnet switched to a new profile page on Thursday, and they are currently trying to work a lot of bugs out. Thus, sometimes it will tell you the page cannot be found, may not display your most recent posts, etc. Please be patient, as it should be fixed soon, and issues like this are not that common.
Hope this helps,
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how can i view my own porfile??