If you are looking to do a more-than-just-talking podcast, or have a spiffy intro/exit to your regular podcast to make it more professional, RadioDaddy is a great place to find voiceovers - free.
RadioDaddy is a volunteer service. So, if you put in a set of guidelines for the exact voiceover you need, a volunteer - [...]

If you are going to use podcasting to supplement your marketing efforts, you need to stick by the ‘added value’ marketing rule. One tried and true way to get people to try your new medium - whether your website, your email newsletter, your blog or your podcast - is to offer something extra.
Making your [...]

One great way to ‘hook’ your listeners is to connect with them on a personal level.  Of course, while this is true with blogs and email newsletters, it’s so VERY true with podcasts.Try telling your storyTell us how you came to be in the business that your are in…  Tell us why you love it [...]

A frequent podcasting question is, "How Often Should I Release a Podcast?"
The answer varies, depending on subject material, however, regular podcasts perform better than irregular ones. 
If a consumer knows there will be frequent content, they will rely on your show to be there for them:

on the commute
at the gym
or at the office