Here is a list for blog directories where you can submit your blog, drive traffic and create backlinks. If you also know about some blog directories then feel free to mention it here so that others could also get benefited from your knowledge.
Following are some famous blogging communities for promoting your blog and meeting new bloggers. If you are interested in meeting new bloggers and promoting your blog then check this list out.
If this list confuses you on selecting the right blogging community for your blog then I suggest you to join Bloggers.Com. Bloggers.Com is free and best blogger community where you can meet millions of bloggers and this is the community where most of the bloggers are active, not like other communities where after connecting blog they never return back.
You can very easily monitor web regularly for plagiarism. Its easy to search for the copies of any webpage using its URL.