You could check out 99Designs.
Two more ideas:
*Set up a portfolio - behance has a good, searchable version that will increase your visibility.
*Contact your past clients and see if there’s anyone they’d recommend you contact from their own networks.
Yes, portfolio set up is the best option. If you have your own blog or website then design portfolio section in it is the best practice to get more work as well as you can also design the separate site for the portfolio. And with the help of SEO techniques such as offpage and onpage, you can promote portfolio in the market very easily through search engine.
http://www.donanza.com/jobs/logo_design Find here work for logo design.
Just maintain your portfolio and start bidding. I am sure you will get logo work in bulk.
Yes, portfolio set up is the best choice. If you have your own blog or website, and then design the combination part, it is the best way, to get more work, and the combination, you can also design a separate site. Using SEO techniques, such as offpage current pages, you can promote on the market portfolio is easy to through the search engine.