Yep, my 1st comment.

Wordpress REINVENTED Blogging, they are super specialized in blogging, immigrating to wordpress is as easy as 1-2-3, google about going from blogger to wordpress.

They have Akismet SUPER spam fighter, and many many tools to customize your blog even if you don't know how to write one single command line.

See this nested comments?, well worpdress was the one who adapted 1st, and gave it to all, since every single code there is OPEN-SOURCE.

Plus, when you go to wordpress, you have automatically a free nice mobile version of your site, try visiting my blog on your mobile and you will see.

You always redirect your readers by a simple notion, keep your blog here, and whenever a they visit your blog they will go there, this way you can figure out the one who really follows you.

Plus if you feedburned your RSS, you wont lose any RSS reader, you just need to go to feedburner and re enter your new feed provider.

Oh, did I mention they have a built in e-mail subscription with a very nice mail template.

Anyway, try it, if you didn't like it, well then stay here :)
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Go for wordpress.com , it's WAY TOO GOOD than blogger.