Know your limitations, If you are maintaining more than 20 blogs/sites,you cannot post enough keyword rich articles on each and every sites/blogs. So just share that 'task' to your readers. Let them add contents for you.
Start web directories like http://www.companiescontacts.com/ and invite your readers to add their businesses for you.
Start web directories like http://www.companiescontacts.com/ and invite your readers to add their businesses for you.
