Silvery - 5:47 pm on Apr 16, 2008 (gmt 0)

I think I can see both sides of this issue, though I am a bit more on the conservative-to-curmudgeonly end of the spectrum on it.

Deployment of content to multiple services is good from the sense that some people are more active in one type of service than another, and thus are more likely to read your content through a particular platform than another. For instance, Facebook devotees might be more inclined to read stuff there versus MySpace or directly on your blog or else where. Also, notifications of blog updates are useful for link-building.

The downside is very important to keep in mind, though, as ergophobe has highlighted. If you deploy the same identical content onto multiple platforms, you will have a duplicate content issue going on to some degree. It would be far better/preferable to have one blog post/article in one place, and then post small snippet summaries linking back to it everywhere else. This would function better, IMHO.

I do something similar since I write for a somewhat central news/info site -- I write a big article on it, then from my personal blog I'll mention that article or write an additional facet and link back to the main article.

Deployment if used wisely is useful for promotion, but unchecked widespread spamming of identical content is a bad approach.