Thank you Sudhakar for your insight but I think if I were offending people already it would have been known and I would have been blocked but I have been doing this nearly 2 years for my company and I would need to follow the similar vein should I do this for others. I have two methods I follow. I write stories meant to motivate, inspire, help or otherwise leave positive impressions. Those I have a "Sponsored by Cloudia Assistant" image I attach to the end; I also send those to various groups. I then have the short, one feature/benefit ads I put out but never the same on in two months so it doesn't look like ads but it speaks about our product and those I only post without sharing with groups. The method appears to work because I have never heard a complaint in 2 years. Any add I placed, speaking for other companies would have to be similar to what I do now so I wont run into the "what if's" you mentioned.
Sidney, I have been investigating this and I get anywhere from $500 to $5000 quoted me. However, these are not your typical ads because I write them and it is more like my personal endorsement or a review than an ad. People trust me because I don't lie, scheme, deceive or write embellishments unless they are obviously humorous. It takes more effort designing them but I want to be fair. I also know that once I set the first price I am setting a precedence and if they start taking too much time it could hurt my primary business so I guess that's what I'm looking for, a fair price.