Outreach to bloggers for product reviews. All at once or stretched over time?

[lcourse]

We have identified about 150 bloggers in our niche worldwide and want to send them a free product sample for a review on their blog. From former similar promotion we know that actually the vast majority will accept.

Would you send the proposal at once to all bloggers or just contact lets say 5 per week over 6 months?

Do you think it is better to vary the products to be reviewed instead of sending all the exact same product model?

Not sure how bloggers will like it if they notice that we made the same proposal to every blogger and that on all blogs in our niche about the same time suddenly reviews of same products appear?

Any thoughts?

[StreamlineMetrics]

I'd suggest spreading out the proposals, especially if all of the bloggers are within the same niche. It will be obvious to blog readers interested in the niche that the reviews are paid for if every blog is essentially promoting the same product/category of products within the same time period. I would also suggest varying the products if possible (although I don't know anything about the products you are offering) just so 150 blogs aren't reviewing the exact same product, which again might turn off blog readers and could even raise some flags with the search engines as being "sponsored posts" (especially if they all show up at once).

That being said, if you are looking to generate some publicity for a new product launch, it might be a better idea to do some blogger outreach combined with press releases and articles/interviews with major news outlets just so it comes off as more "legitimate" buzz instead of simply getting a bunch of bloggers to review the same product at the same time.

[lcourse]

thanks.

excellent idea to combine it with press release.