Does technorati place tags for you blog? I am using blogger and I am not sure if my site is generating tags for the search engines.
I don't think so - you place tags for your blog on Technorati. I use Blogger too - as long as you write original content regularly the search engines will find you no problem.
You must create the tag by your own if you using blogger, probably people are using wordpress, your tag is for technorati automatic.
The tags are for technorati search only, not for search engines. For that, you'll need to submit your blog's URL to Google, Yahoo, etc. and wait around a week to get your blog indexed. Mine took 4 days. You don't need to worry about meta tags. Search engines nowadays tend to ignore them anyway. Just focus on titles and content (keyword-rich 1st paragraphs).