Could anyone can help me to find a reliable SEO firm?

[Sebastian]

•Search Online and Review Page Ranking
•A Track Record that Proves Competence
•The easiest way to check if a company is as skilled as it promotes itself to be is to visit the official website, and check its PR. If they can’t optimize their own site to have a rating than 4 or 5, then it is not likely that they can get your site above that level.
•SEO forums can often be very informative regarding some of the main SEO companies that promote their services on the internet today. You can often find all the information you need on one of these forums about the company you are thinking of working with.
•Don’t be misled by the price differences between various SEO offers. Just because a service is more expensive, it doesn’t mean that it’s better. Instead, try to find out as much as you can about the backlink building methods they use.
•Keep in mind that search engine optimization is a lengthy process, often spanning over several months. Avoid companies that promise you instant results without offering long term assistance.
•Aside from the main SEO offers it provides, check to see if the company you want to work with offers any additional services. Before agreeing on a partnership, ask about some of the websites they have already optimized, and see how well they are doing today. If their page rank is high, it might actually mean that you have found yourself a quality SEO service.
•Lastly, the best opinions you can get are from those who have already dealt with the company in question. Browse around looking for reviews and testimonials, and see how highly people talk about their skills.