I want to promote my site ( I want to be among the top 30 of the main search engines like google, yahoo for keyprase "Digital Cameras") There is a firm "www.jnbwebpromotion.com" who offer a promotion program (not free). They said that they could promote my site to reach the top 30.

Does somebody has experience with them?
Are they realy good?

Thank you

My last check for Digital Cameras in googles there was 206 000 000 urls! It certainly isn't easy to get even to top 100! For such paid service I would suggest you to check their TOS very carefully and to ask them what would happen if they can't get you to Top 30.

I would suggest you to check their TOS very carefully and to ask them what would happen if they can't get you to Top 30.And also consider how worthwhile it'd be to be in the top 30... how many people go three pages deep into the results? What return could you expect on that investment?

You may be better off targeting less competitive variants of the term for which you could get onto the first page -- or, of course, work for first page placement for that term. Other than bragging rights (you can tell all your friends your number 30 out of 206,000,000 I guess) I wouldn't see a lot of value in being number 30. So it may depend on exactly what that "not free" would cost.

Do some searches for web promotion, if you see that company in the top 30 fair enough. If they're nowhere to be seen can you be certain they can do what they offer?

I think you'd be better off spending the money making sure your site is search engine friendly and looking at other forms of advertising.